Finally! My 383 swap
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Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
I haven't touched it since that video. The fuel level on the carb window is 1/2 way on primaries and to the bottom on the secondaries. I think I need to adjust that.
I did have the motor plates switched. So I fixed that. The weld on the collector still hit the frame and I had to not it anyways. As far as the primary hitting I have 1/8 of an inch clearance now rather then it sitting on the frame.
I did have the motor plates switched. So I fixed that. The weld on the collector still hit the frame and I had to not it anyways. As far as the primary hitting I have 1/8 of an inch clearance now rather then it sitting on the frame.
Thats tight for clearance, its sure to hit when loading the mounts, dont't you think?
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
i really didnt look at it when i revved the motor, this weekend ill take a look. I just hope the Y pipe doesnt give me any griefs. Like everything else with this build, it probably will
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
I think you will be okay with the Y, it is multi piece, giving you option of twisting the angles if you need it.
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
new dilema:
My fans are hooked up to my accessory box along with my fuel pump. Well the fans are drawing too much current and blowing the fuse. Right now i have my fuel pump getting power from the box, then i ran a wire to a switch to keep it on. What option do i have with the fans? Right now i bought i relay thats hooked up to the radiator, so i dont want the fans on a switch, and i dont want them on all the time.
My fans are hooked up to my accessory box along with my fuel pump. Well the fans are drawing too much current and blowing the fuse. Right now i have my fuel pump getting power from the box, then i ran a wire to a switch to keep it on. What option do i have with the fans? Right now i bought i relay thats hooked up to the radiator, so i dont want the fans on a switch, and i dont want them on all the time.
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
new dilema:
My fans are hooked up to my accessory box along with my fuel pump. Well the fans are drawing too much current and blowing the fuse. Right now i have my fuel pump getting power from the box, then i ran a wire to a switch to keep it on. What option do i have with the fans? Right now i bought i relay thats hooked up to the radiator, so i dont want the fans on a switch, and i dont want them on all the time.
My fans are hooked up to my accessory box along with my fuel pump. Well the fans are drawing too much current and blowing the fuse. Right now i have my fuel pump getting power from the box, then i ran a wire to a switch to keep it on. What option do i have with the fans? Right now i bought i relay thats hooked up to the radiator, so i dont want the fans on a switch, and i dont want them on all the time.
I would run a new circuit with heavier gauge wire. Eliminate the problem...... I wouldnt want my fuel pump to die on the street

Run a line directly to the battery with an inline fuse or add a heavy duty fuse box and hook up there.
What amperage does the thing draw?
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
i have no clue what they draw. Only thing i can tell you is when they kick on the motor goes from 900rpm to 500ish. I can only imagine what the headlights will look like when they kick on lol. As of now i unplugged 1 fan, but i wont know for sure if its good enough until I get it on the road and in some hot weather.
This is why i wanted some ideas, because i like both of them to work. 190 to 160 degrees in 20 seconds is nice to have lol
This is why i wanted some ideas, because i like both of them to work. 190 to 160 degrees in 20 seconds is nice to have lol
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
i have no clue what they draw. Only thing i can tell you is when they kick on the motor goes from 900rpm to 500ish. I can only imagine what the headlights will look like when they kick on lol. As of now i unplugged 1 fan, but i wont know for sure if its good enough until I get it on the road and in some hot weather.
This is why i wanted some ideas, because i like both of them to work. 190 to 160 degrees in 20 seconds is nice to have lol
This is why i wanted some ideas, because i like both of them to work. 190 to 160 degrees in 20 seconds is nice to have lol
Re: Finally! My 383 swap
Yep, get the fans and the fuel pump on separate circuits. run some 10 ga wire to the fans, and use a relay. From the factory, these cars had two fans, one controlled by the computer, and one on a coolant temp switch. Maybe do kinda the same thing with your setup. Run one on a coolant temp switch, and the other on a toggle. You'll prolly never need the second one anyway, but if the primary fan ever quits, or you find yourself driving through a desert, it would be nice to have a backup.
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Whatever comes with the 97 tahoe. Same amp. Thinking if I bout a deep cell optimum battery that should help also
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
Not sure about the deep cell, I only use them in my boat! Would the charging system not kill it?
I would do what 88gunmetal said. Isolate the circuit, heavier guage wire, bigger fuse.
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
I dont remember what plugs i took off the stock shifter. Question is the long plug that the neutral safety switch harness is on, besides the purple and yellow wire (which is nuetral safety) What are all the other wires for in the plug? All i need to hook up is the reverse lights, and nuetral safety. Can i cut the other wires?
Next question. In the harness for the trans i have a 4 prong plug, and a 2 prong plug. The 4 prong is hooked up but where does the 2 prong go too? i dont see any places for it too plug into.
Next question. In the harness for the trans i have a 4 prong plug, and a 2 prong plug. The 4 prong is hooked up but where does the 2 prong go too? i dont see any places for it too plug into.
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
I dont remember what plugs i took off the stock shifter. Question is the long plug that the neutral safety switch harness is on, besides the purple and yellow wire (which is nuetral safety) What are all the other wires for in the plug? All i need to hook up is the reverse lights, and nuetral safety. Can i cut the other wires?
Next question. In the harness for the trans i have a 4 prong plug, and a 2 prong plug. The 4 prong is hooked up but where does the 2 prong go too? i dont see any places for it too plug into.
Next question. In the harness for the trans i have a 4 prong plug, and a 2 prong plug. The 4 prong is hooked up but where does the 2 prong go too? i dont see any places for it too plug into.
Are you retaining the computer? How are you going to lock up the converter?
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
still using the computer, someone said the 2 prong is on the tailshaft? if the reverse lights and neutral safety switch are on the long prong, what are the other plugs for for the shifter? are they the console lights? Not like i had power windows or anything
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
I can look at mine and let you know what they are.
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
2 prong if black/orange goes to console/compartment light switch. The black/grey 2 prong is the PRNDL light.
Hope that helps.
Hope that helps.
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Thank you sir, now I know I don't need them.
So all wires I need are in the long prong. Just need to figure out which is the wires for the reverse lights seeing I found neutral switch.
Update yesterday and todays small progress:
Cut the sheet metal out for stock shifted brackets. Made trans tunnel flat and bolted down a thick steel plate for the megashifter. Hooked shifter up, alittle tight shifting but works. The wife will need 2 hands to shift it.
Bleeded the front brakes, to find out the main line to the rear rotted out and was leaking. Changed that line out, bleeded the driver side back, moved to passenger side when the driver side blew a line lol At this point I decided that every brake line was getting replaced lol. Most likely but not promising myself that I will have a video driving it tomorrow lol still waiting for my Y pipe, either this week or next week it should get delivered. I found my carb tuner and dyno shop to get it tuned.
So all wires I need are in the long prong. Just need to figure out which is the wires for the reverse lights seeing I found neutral switch.
Update yesterday and todays small progress:
Cut the sheet metal out for stock shifted brackets. Made trans tunnel flat and bolted down a thick steel plate for the megashifter. Hooked shifter up, alittle tight shifting but works. The wife will need 2 hands to shift it.
Bleeded the front brakes, to find out the main line to the rear rotted out and was leaking. Changed that line out, bleeded the driver side back, moved to passenger side when the driver side blew a line lol At this point I decided that every brake line was getting replaced lol. Most likely but not promising myself that I will have a video driving it tomorrow lol still waiting for my Y pipe, either this week or next week it should get delivered. I found my carb tuner and dyno shop to get it tuned.
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
Thank you sir, now I know I don't need them.
So all wires I need are in the long prong. Just need to figure out which is the wires for the reverse lights seeing I found neutral switch.
Update yesterday and todays small progress:
Cut the sheet metal out for stock shifted brackets. Made trans tunnel flat and bolted down a thick steel plate for the megashifter. Hooked shifter up, alittle tight shifting but works. The wife will need 2 hands to shift it.
Bleeded the front brakes, to find out the main line to the rear rotted out and was leaking. Changed that line out, bleeded the driver side back, moved to passenger side when the driver side blew a line lol At this point I decided that every brake line was getting replaced lol. Most likely but not promising myself that I will have a video driving it tomorrow lol still waiting for my Y pipe, either this week or next week it should get delivered. I found my carb tuner and dyno shop to get it tuned.
So all wires I need are in the long prong. Just need to figure out which is the wires for the reverse lights seeing I found neutral switch.
Update yesterday and todays small progress:
Cut the sheet metal out for stock shifted brackets. Made trans tunnel flat and bolted down a thick steel plate for the megashifter. Hooked shifter up, alittle tight shifting but works. The wife will need 2 hands to shift it.
Bleeded the front brakes, to find out the main line to the rear rotted out and was leaking. Changed that line out, bleeded the driver side back, moved to passenger side when the driver side blew a line lol At this point I decided that every brake line was getting replaced lol. Most likely but not promising myself that I will have a video driving it tomorrow lol still waiting for my Y pipe, either this week or next week it should get delivered. I found my carb tuner and dyno shop to get it tuned.
Reverse light wire should be the green one.
Brake lines! replace one... replace them all!
Re: Finally! My 383 swap
Progress is progress.
I'm about to *hopefully* post a first start video, hopefully it will not be a CARNAGE video
I finally started a build thread, it should be pretty close to the top.
Good luck with your test drive!
I'm about to *hopefully* post a first start video, hopefully it will not be a CARNAGE video

I finally started a build thread, it should be pretty close to the top.
Good luck with your test drive!
Thread Starter
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Took her for a ride. Unfortunately I was mistaken about the current rear. Am guessing the v6 auto and manual cars came with different rears. My last camaro was a posi 373 rear 5 speed. This rear is one wheel wonder and almost positive highway gears. My 3k stall, cam and highway gears are not cooperating with eachother very well hehe.
Ill post teaser videos tomorrow. And when I said a ride I ment around the block in a 25mph zone with kids playing lol
Ill post teaser videos tomorrow. And when I said a ride I ment around the block in a 25mph zone with kids playing lol
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
Took her for a ride. Unfortunately I was mistaken about the current rear. Am guessing the v6 auto and manual cars came with different rears. My last camaro was a posi 373 rear 5 speed. This rear is one wheel wonder and almost positive highway gears. My 3k stall, cam and highway gears are not cooperating with eachother very well hehe.
Ill post teaser videos tomorrow. And when I said a ride I ment around the block in a 25mph zone with kids playing lol
Ill post teaser videos tomorrow. And when I said a ride I ment around the block in a 25mph zone with kids playing lol
How is it running now?
Forgot to ask....
What header gaskets and bolts did you use with the Afr heads?
Thread Starter
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Earls header gaskets with arp 12 point bolts. The whole motor is done in arp besides valve covers. Motors running ok. She has a little hiccup to her but is close. Motor didn't see over 3grand when I took her out. It was too loud and took too long to hit 3 grand lol
Thread Starter
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
If you use a arp bolt you can take a 3/8 wrench and grind it down a little to tighten them. The bolts are so close with our headers it's the only way
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
What are you going to do for a diff now? Your going to hate that long geared peg leg rear!
Any special locks on the header bolts?
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
I just used the washer that came with the bolts. I have a worked 10 bolt with 411 Richmond gears sitting in the garage. Am just lazy to replace it at the moment lol. Am putting the car on the road next week and doing the exhaust, then the car can come back home with me. My buddy has done so many third gen rear swaps am going to have him do it. I need a brake with the car. Am drained hehe
Thread Starter
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Thread Starter
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Didn't motivate me today I motivated myself lol. After laying on the couch till 12 I was bored lol. Decided to get off my *** and do some work. Rears out. New shocks and traction bars on, made brake lines look all nice. Tomorrow she will go back in. I think my y pipe is in but got delivered to nj. So exhaust can't go on for awhile. Should be able to take her out for a spin later tomorrow. Will let you know and post a better video
Thread Starter
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Update:
Rear, panhard bar, traction bars, shocks are in and complete. Took her out for a spin.....wow, that's all I can say. Those 4:11's woke it up night and day. I still have yet got her above 3 grand ( no reg, no insurance, no exhaust ) but I can say she's got some power
Oh and the tune is way off, so am sure plenty more power to get from that
Rear, panhard bar, traction bars, shocks are in and complete. Took her out for a spin.....wow, that's all I can say. Those 4:11's woke it up night and day. I still have yet got her above 3 grand ( no reg, no insurance, no exhaust ) but I can say she's got some power

Oh and the tune is way off, so am sure plenty more power to get from that
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
Update:
Rear, panhard bar, traction bars, shocks are in and complete. Took her out for a spin.....wow, that's all I can say. Those 4:11's woke it up night and day. I still have yet got her above 3 grand ( no reg, no insurance, no exhaust ) but I can say she's got some power
Oh and the tune is way off, so am sure plenty more power to get from that
Rear, panhard bar, traction bars, shocks are in and complete. Took her out for a spin.....wow, that's all I can say. Those 4:11's woke it up night and day. I still have yet got her above 3 grand ( no reg, no insurance, no exhaust ) but I can say she's got some power

Oh and the tune is way off, so am sure plenty more power to get from that
Lol, be careful!
You need to get that exhaust on to give it a proper tune.
Based on your specs, I am sure she will pull like a raped ape
Thread Starter
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Only driving it around the block, very short run, more like a teaser. Good thing I helped my uncle fix the state troopers suburban lol he gave me the ok 
Don said he was shipping the exhaust out soon. Once that's on my mechanic is going to finish the tune, check valves and rockers. That should get me going good untill I get about 3,000 miles on it and bring it to the dyno for the fine tuning. Gimmie a month and the drivetrain is complete. 3-4 months ill start on the rollbar, sfc, and get the interior done. Then its time for the body.

Don said he was shipping the exhaust out soon. Once that's on my mechanic is going to finish the tune, check valves and rockers. That should get me going good untill I get about 3,000 miles on it and bring it to the dyno for the fine tuning. Gimmie a month and the drivetrain is complete. 3-4 months ill start on the rollbar, sfc, and get the interior done. Then its time for the body.
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
Only driving it around the block, very short run, more like a teaser. Good thing I helped my uncle fix the state troopers suburban lol he gave me the ok 
Don said he was shipping the exhaust out soon. Once that's on my mechanic is going to finish the tune, check valves and rockers. That should get me going good untill I get about 3,000 miles on it and bring it to the dyno for the fine tuning. Gimmie a month and the drivetrain is complete. 3-4 months ill start on the rollbar, sfc, and get the interior done. Then its time for the body.

Don said he was shipping the exhaust out soon. Once that's on my mechanic is going to finish the tune, check valves and rockers. That should get me going good untill I get about 3,000 miles on it and bring it to the dyno for the fine tuning. Gimmie a month and the drivetrain is complete. 3-4 months ill start on the rollbar, sfc, and get the interior done. Then its time for the body.
Cant wait to get my intake here so I can finish.
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
Decided to try the FIRST tpi intake. Tranny kit and stall is also on order.
I would say I am 3-4 weeks from a start up in the car.
I am not touching suspension or diff at the moment, and I will see how things go this season, and will only touch what/if something breaks.
I just want to drive!
I would say I am 3-4 weeks from a start up in the car.
I am not touching suspension or diff at the moment, and I will see how things go this season, and will only touch what/if something breaks.
I just want to drive!
Re: Finally! My 383 swap
Decided to try the FIRST tpi intake. Tranny kit and stall is also on order.
I would say I am 3-4 weeks from a start up in the car.
I am not touching suspension or diff at the moment, and I will see how things go this season, and will only touch what/if something breaks.
I just want to drive!
I would say I am 3-4 weeks from a start up in the car.
I am not touching suspension or diff at the moment, and I will see how things go this season, and will only touch what/if something breaks.
I just want to drive!
Thread Starter
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
2 days and she will be legal to drive
7 days until i see her again
Whats everyones going rate for a dyno tune? I got a quote from a guy who works on carbs specific. 150/hr for the first hour, then 100/hr afterwords. I need to buy a jet and air kit for the carb, and change them myself at there shop if need be. This sound reasonable?
Also i have no clue what kit i need to order for my carb. Any links are greatly appreciated. Thanks guy
7 days until i see her again

Whats everyones going rate for a dyno tune? I got a quote from a guy who works on carbs specific. 150/hr for the first hour, then 100/hr afterwords. I need to buy a jet and air kit for the carb, and change them myself at there shop if need be. This sound reasonable?
Also i have no clue what kit i need to order for my carb. Any links are greatly appreciated. Thanks guy
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
2 days and she will be legal to drive
7 days until i see her again
Whats everyones going rate for a dyno tune? I got a quote from a guy who works on carbs specific. 150/hr for the first hour, then 100/hr afterwords. I need to buy a jet and air kit for the carb, and change them myself at there shop if need be. This sound reasonable?
Also i have no clue what kit i need to order for my carb. Any links are greatly appreciated. Thanks guy
7 days until i see her again

Whats everyones going rate for a dyno tune? I got a quote from a guy who works on carbs specific. 150/hr for the first hour, then 100/hr afterwords. I need to buy a jet and air kit for the carb, and change them myself at there shop if need be. This sound reasonable?
Also i have no clue what kit i need to order for my carb. Any links are greatly appreciated. Thanks guy
Call quick fuel? They may know exactly what you need.
Thread Starter
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Joined: Dec 2009
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Update:
exhaust is done, no tailpipe yet but still has manners on the street. Tuning needs some help, she's sitting at 1100 at idle. Got rid of the hesitation but she hiccups when I shut her off. Took her for her first 5 mile drive, runs a tad hot with only 1 fan hooked up. Am going to hard wire the secondary fan tomorrow. My brother is going to follow me with a camcorder tomorrow so you guys can see the outcome. Am very pleased. I opened her up for the first time to 4800 and was extremely impressed in the power and response. Video will be posted soon : )
exhaust is done, no tailpipe yet but still has manners on the street. Tuning needs some help, she's sitting at 1100 at idle. Got rid of the hesitation but she hiccups when I shut her off. Took her for her first 5 mile drive, runs a tad hot with only 1 fan hooked up. Am going to hard wire the secondary fan tomorrow. My brother is going to follow me with a camcorder tomorrow so you guys can see the outcome. Am very pleased. I opened her up for the first time to 4800 and was extremely impressed in the power and response. Video will be posted soon : )
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
Update:
exhaust is done, no tailpipe yet but still has manners on the street. Tuning needs some help, she's sitting at 1100 at idle. Got rid of the hesitation but she hiccups when I shut her off. Took her for her first 5 mile drive, runs a tad hot with only 1 fan hooked up. Am going to hard wire the secondary fan tomorrow. My brother is going to follow me with a camcorder tomorrow so you guys can see the outcome. Am very pleased. I opened her up for the first time to 4800 and was extremely impressed in the power and response. Video will be posted soon : )
exhaust is done, no tailpipe yet but still has manners on the street. Tuning needs some help, she's sitting at 1100 at idle. Got rid of the hesitation but she hiccups when I shut her off. Took her for her first 5 mile drive, runs a tad hot with only 1 fan hooked up. Am going to hard wire the secondary fan tomorrow. My brother is going to follow me with a camcorder tomorrow so you guys can see the outcome. Am very pleased. I opened her up for the first time to 4800 and was extremely impressed in the power and response. Video will be posted soon : )
Thread Starter
Senior Member
iTrader: (2)
Joined: Dec 2009
Posts: 784
Likes: 2
From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Haven't called them yet, when I bring the car back home with me ill get it. He tuner lives by me.
I don think the fan is the problem. I was bringing her back to the garage earlier and the Tach died on me. Then the car started overheating. Then I needed a jump. So the alternator is getting replaced tomorrow, those fans were barely spinning for being 3000cfm's. Took me 3 n
I don think the fan is the problem. I was bringing her back to the garage earlier and the Tach died on me. Then the car started overheating. Then I needed a jump. So the alternator is getting replaced tomorrow, those fans were barely spinning for being 3000cfm's. Took me 3 n
Thread Starter
Senior Member
iTrader: (2)
Joined: Dec 2009
Posts: 784
Likes: 2
From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
back to the drawing board.
Replaced the alternator today and fixed that problem. Routed secondary fan to a switch, inline fuse and the battery.
Serious cooling issues. While i thought it was amazing during first startup and it cooling as fast as it did, it does absolutley nothing while driving. 4 mile trip i had to pull over twice to cool it down, and thats both fans running.
Timing is off when i shut the car down it makes some baaad noises. So at this point am done with it for the time being. She is parked
When i get someone to do the timing ill check to see if the water pump is working, if it is then am stumped. i dont think she is running that hot because of the timing, but i dont know
-3 core aluminum radiator
-6000cfm electric fans
-160 stat
Replaced the alternator today and fixed that problem. Routed secondary fan to a switch, inline fuse and the battery.
Serious cooling issues. While i thought it was amazing during first startup and it cooling as fast as it did, it does absolutley nothing while driving. 4 mile trip i had to pull over twice to cool it down, and thats both fans running.
Timing is off when i shut the car down it makes some baaad noises. So at this point am done with it for the time being. She is parked
When i get someone to do the timing ill check to see if the water pump is working, if it is then am stumped. i dont think she is running that hot because of the timing, but i dont know -3 core aluminum radiator
-6000cfm electric fans
-160 stat
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
back to the drawing board.
Replaced the alternator today and fixed that problem. Routed secondary fan to a switch, inline fuse and the battery.
Serious cooling issues. While i thought it was amazing during first startup and it cooling as fast as it did, it does absolutley nothing while driving. 4 mile trip i had to pull over twice to cool it down, and thats both fans running.
Timing is off when i shut the car down it makes some baaad noises. So at this point am done with it for the time being. She is parked
When i get someone to do the timing ill check to see if the water pump is working, if it is then am stumped. i dont think she is running that hot because of the timing, but i dont know
-3 core aluminum radiator
-6000cfm electric fans
-160 stat
Replaced the alternator today and fixed that problem. Routed secondary fan to a switch, inline fuse and the battery.
Serious cooling issues. While i thought it was amazing during first startup and it cooling as fast as it did, it does absolutley nothing while driving. 4 mile trip i had to pull over twice to cool it down, and thats both fans running.
Timing is off when i shut the car down it makes some baaad noises. So at this point am done with it for the time being. She is parked
When i get someone to do the timing ill check to see if the water pump is working, if it is then am stumped. i dont think she is running that hot because of the timing, but i dont know -3 core aluminum radiator
-6000cfm electric fans
-160 stat
I would pull plugs and see what they look like, at least an idea that it may be too lean. If your dieseling after shut down, than I would assume too advanced. Get the timing in, go from there.
One thing to look at is the lower rad hose, make sure it is not imploding/ calapsing, causing a restriction, and check it at higher rpms.
I know the f-bodies need the air reflector/air dam under the front nose to cool properly at cruising speed. Do you have yours on?
Joined: Sep 2003
Posts: 25,896
Likes: 430
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Finally! My 383 swap
Need to verify timing and air fuel and work from there. Make sure the rad is full of fluid and there are no air pockets. Really look over that fluid system and after that see what happens. I had a few issues on first rad fill up to get the system primed up and all the air out. Also, air fuel ratio and timing will have effects on how hot the motor runs. You'd be surprised. So do those things and it should come around.
Thread Starter
Senior Member
iTrader: (2)
Joined: Dec 2009
Posts: 784
Likes: 2
From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Heres what i have been thinking before i ask questions bout your guys post.
The water pump pulley came off the truck, the crankshaft pulley if off a F body. If the water pump pulley is bigger then the crankshaft that could cause issues right? i have not verified this but was thinking about it on my way home.
Water pump possibly go bad? I bought a new GM high volume pump. I did not verify it was circulating threw the radiator though as the car was about 225-230 when it reached the final destination.
I do not have the air dam under the car, it wasnt on when i bought it, i will however go locate one and throw it on. However the air dam should have nothing to do when the car is sitting at idle with both fans on. It should cool down.
Like said before i refuse to start the car and let it warm up untill i either find someone in NY who knows what there doing with timing and adjusting the carb, or i trailer it back to NJ and have it done.
I will look into the radiator hose on the bottom after the cars tuned and running.
Orr your the second guy that mentioned this air pocket. How do i get rid of this? Do i drain the system and start over?
Last question
My 1 to 2 upshift occurs within the first 2-5mph. I noticed this today. Even with the B@M shifter all the way down. Is the linkage wrong or do i need to change the govenor on the trans? Seeing when i put 3/4 throttle yesterday to 4800 i thought it was in first, little did i know it was the very bottom of second. Which makes me think it has more power then i thought
The water pump pulley came off the truck, the crankshaft pulley if off a F body. If the water pump pulley is bigger then the crankshaft that could cause issues right? i have not verified this but was thinking about it on my way home.
Water pump possibly go bad? I bought a new GM high volume pump. I did not verify it was circulating threw the radiator though as the car was about 225-230 when it reached the final destination.
I do not have the air dam under the car, it wasnt on when i bought it, i will however go locate one and throw it on. However the air dam should have nothing to do when the car is sitting at idle with both fans on. It should cool down.
Like said before i refuse to start the car and let it warm up untill i either find someone in NY who knows what there doing with timing and adjusting the carb, or i trailer it back to NJ and have it done.
I will look into the radiator hose on the bottom after the cars tuned and running.
Orr your the second guy that mentioned this air pocket. How do i get rid of this? Do i drain the system and start over?
Last question

My 1 to 2 upshift occurs within the first 2-5mph. I noticed this today. Even with the B@M shifter all the way down. Is the linkage wrong or do i need to change the govenor on the trans? Seeing when i put 3/4 throttle yesterday to 4800 i thought it was in first, little did i know it was the very bottom of second. Which makes me think it has more power then i thought
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
Heres what i have been thinking before i ask questions bout your guys post.
The water pump pulley came off the truck, the crankshaft pulley if off a F body. If the water pump pulley is bigger then the crankshaft that could cause issues right? i have not verified this but was thinking about it on my way home.
Water pump possibly go bad? I bought a new GM high volume pump. I did not verify it was circulating threw the radiator though as the car was about 225-230 when it reached the final destination.
I do not have the air dam under the car, it wasnt on when i bought it, i will however go locate one and throw it on. However the air dam should have nothing to do when the car is sitting at idle with both fans on. It should cool down.
Like said before i refuse to start the car and let it warm up untill i either find someone in NY who knows what there doing with timing and adjusting the carb, or i trailer it back to NJ and have it done.
I will look into the radiator hose on the bottom after the cars tuned and running.
Orr your the second guy that mentioned this air pocket. How do i get rid of this? Do i drain the system and start over?
Last question
My 1 to 2 upshift occurs within the first 2-5mph. I noticed this today. Even with the B@M shifter all the way down. Is the linkage wrong or do i need to change the govenor on the trans? Seeing when i put 3/4 throttle yesterday to 4800 i thought it was in first, little did i know it was the very bottom of second. Which makes me think it has more power then i thought
The water pump pulley came off the truck, the crankshaft pulley if off a F body. If the water pump pulley is bigger then the crankshaft that could cause issues right? i have not verified this but was thinking about it on my way home.
Water pump possibly go bad? I bought a new GM high volume pump. I did not verify it was circulating threw the radiator though as the car was about 225-230 when it reached the final destination.
I do not have the air dam under the car, it wasnt on when i bought it, i will however go locate one and throw it on. However the air dam should have nothing to do when the car is sitting at idle with both fans on. It should cool down.
Like said before i refuse to start the car and let it warm up untill i either find someone in NY who knows what there doing with timing and adjusting the carb, or i trailer it back to NJ and have it done.
I will look into the radiator hose on the bottom after the cars tuned and running.
Orr your the second guy that mentioned this air pocket. How do i get rid of this? Do i drain the system and start over?
Last question

My 1 to 2 upshift occurs within the first 2-5mph. I noticed this today. Even with the B@M shifter all the way down. Is the linkage wrong or do i need to change the govenor on the trans? Seeing when i put 3/4 throttle yesterday to 4800 i thought it was in first, little did i know it was the very bottom of second. Which makes me think it has more power then i thought

Your right about the air dam.
Run the car with the cap off and, a few thermastat opening and closing should burp the air out.
I am willing to bet on improper fueling/timing being the issue though.
Thread Starter
Senior Member
iTrader: (2)
Joined: Dec 2009
Posts: 784
Likes: 2
From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Finally! My 383 swap
Round 9, here we go....
Heading to NY again....
This time around am having a professional tune the carb and the motor
Gonna install a new battery to fix 1 problem. Gonna have to fab something up for the Air dam, iv'e been lazy and didnt go search for one lol My appointment is tomorrow morning at 9. If all goes well i will have a video up sometime sunday. If its still overheating ill check the obvious then am sure you will hear from me!
Heading to NY again....
This time around am having a professional tune the carb and the motor

Gonna install a new battery to fix 1 problem. Gonna have to fab something up for the Air dam, iv'e been lazy and didnt go search for one lol My appointment is tomorrow morning at 9. If all goes well i will have a video up sometime sunday. If its still overheating ill check the obvious then am sure you will hear from me!
Senior Member

Joined: Jan 2010
Posts: 820
Likes: 1
From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: Finally! My 383 swap
Round 9, here we go....
Heading to NY again....
This time around am having a professional tune the carb and the motor
Gonna install a new battery to fix 1 problem. Gonna have to fab something up for the Air dam, iv'e been lazy and didnt go search for one lol My appointment is tomorrow morning at 9. If all goes well i will have a video up sometime sunday. If its still overheating ill check the obvious then am sure you will hear from me!
Heading to NY again....
This time around am having a professional tune the carb and the motor

Gonna install a new battery to fix 1 problem. Gonna have to fab something up for the Air dam, iv'e been lazy and didnt go search for one lol My appointment is tomorrow morning at 9. If all goes well i will have a video up sometime sunday. If its still overheating ill check the obvious then am sure you will hear from me!
Good luck, hope you get it running well!








