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1SICK90RS 07-07-2011 01:38 PM

another 5.3 LM7 build
 
watsup third gen, i figured since alot of people are doing ls swap's into a third gen, i'd go ahead and give it a shot.here is my parts list:

5.3 LM7 [X]
4L60E
spohn k member w/ lsx mounts
warlboro 255 pump
custom ground cam from texas speed
tea ported ls6 heads with beehive springs and tsp hardened rods
fast 90, or 92 whichever i can find
fast 90mm throttle body
fast fuel rails
stainless steel fuel line conversion
full spohn suspension

BODY & INTERIOR
4th gen dash assembly and console
front bumper
hood [X]
fenders

that's about all i'm gunna need to do the complete conversion and be able to get the car on the road... if there is anything i left out tell me and i will edit as i am new to these conversions. this project will hopeully kick off around january but as of right now i'm just rounding up parts

car started it's life as a 305 tbi automatic, sadly after 14,000 original miles the previous owner smacked it into a tree... the car was sitting up three years until i decided to buy it, not bad for 500 dollars, all of the interior is ment, it's all there, and it all WORKS!!!

may have gotten a 4.8 for trade, not a 5.3 but i've heard that the only difference between the 2 is the stroke and pistons... engine comes with ECM but no harness

1SICK90RS 07-07-2011 01:48 PM

Re: another 5.3 LM7 build
 
car started it's life as a 305 tbi automatic, sadly after 14,000 original miles the previous owner smacked it into a tree... the car was sitting up three years until i decided to buy it, not bad for 500 dollars, all of the interior is ment, it's all there, and it all WORKS!!!

1SICK90RS 07-07-2011 02:26 PM

Re: another 5.3 LM7 build
 
may have gotten a 4.8 for trade, not a 5.3 but i've heard that the only difference between the 2 is the stroke and pistons... engine comes with ECM but no harness

five7kid 07-07-2011 02:56 PM

Quote:

Originally Posted by 1FSTBRD (Post 4972061)
t56 transmission (4th gen camaro)

Make sure it's a '98-'02.

1SICK90RS 07-07-2011 03:01 PM

Re: another 5.3 LM7 build
 
motor is supposedly a 2001

ronnjonn 07-07-2011 03:06 PM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by 1FSTBRD (Post 4972101)
may have gotten a 4.8 for trade, not a 5.3 but i've heard that the only difference between the 2 is the stroke and pistons... engine comes with ECM but no harness

Pistons interchange, though LM7 was dished, LR4 was flat-top. LR4 had longer rods to go with the shorter stroke.

1SICK90RS 07-07-2011 03:09 PM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by ronnjonn (Post 4972130)
Pistons interchange, though LM7 was dished, LR4 was flat-top. LR4 had longer rods to go with the shorter stroke.

so if i change the rotating assembly i will have a 5.3?

ronnjonn 07-07-2011 03:32 PM

Re: another 5.3 LM7 build
 
Yes, but if you're going to do that, may as well get the block bored and make it a 5.7L.

Z28FAST1 07-07-2011 04:26 PM

Re: another 5.3 LM7 build
 
Might want to upgrade from that LS7 clutch if you're going to be putting down more than 400rwhp.

Post up some eye candy, we love pictures here :burnout:

1SICK90RS 07-07-2011 05:55 PM

Re: another 5.3 LM7 build
 
idk how to post pics, i can post links?

1SICK90RS 07-07-2011 07:45 PM

Re: another 5.3 LM7 build
 
pics can be seen here:
http://s869.photobucket.com/albums/a...birdboi79/1990 camaro rs

1SICK90RS 07-07-2011 07:49 PM

Re: another 5.3 LM7 build
 
link above doesn't work, this one should:
http://s869.photobucket.com/albums/a...20camaro%20rs/

five7kid 07-07-2011 11:51 PM

Quote:

Originally Posted by 1FSTBRD (Post 4972126)
motor is supposedly a 2001

I was talking about the T56. You said "t56 transmission (4th gen camaro)"; that could mean '93-'02. You don't want a '93-'97 LT1 T56.

1SICK90RS 07-08-2011 12:20 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by five7kid (Post 4972636)
I was talking about the T56. You said "t56 transmission (4th gen camaro)"; that could mean '93-'02. You don't want a '93-'97 LT1 T56.

o ok, will look next time i'm at a junk yard...

1SICK90RS 07-09-2011 09:27 PM

Re: another 5.3 LM7 build
 
guy hit the tree so hard that it wedged the drive shaft into the transmission

1SICK90RS 07-12-2011 01:59 AM

Re: another 5.3 LM7 build
 
could someone provide me with a pin up for the 4.8 ECM? me and a buddy are going to try to tackle all of the wiring ourselves to save funds

UnstableAviator 07-12-2011 03:59 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by 1FSTBRD (Post 4972667)
o ok, will look next time i'm at a junk yard...

If you find a t56 of any sort at a junkyard, well, that's pure luck. T56 trans are hot items, you can realistically expect to pay close to 1,000 for a good one that doesn't need any work.

1nasty86 07-12-2011 09:40 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by UnstableAviator (Post 4976328)
If you find a t56 of any sort at a junkyard, well, that's pure luck. T56 trans are hot items, you can realistically expect to pay close to 1,000 for a good one that doesn't need any work.

X 2.... t-56's are not going to be found in a junk yard anywhere around here

1SICK90RS 07-13-2011 06:59 PM

Re: another 5.3 LM7 build
 
found my headers today, they are 1 3/4 tubing with a 3 inch collector for $190. it's a kit from speedway motors so welding will be required...

1SICK90RS 07-14-2011 05:11 PM

Re: another 5.3 LM7 build
 
Moderator, please delete this thread, it's gunna be a while before i can get around to ls swap

1SICK90RS 07-21-2011 08:37 AM

Re: another 5.3 LM7 build
 
ok guys, ordering my 4th gen pedals shortly from hawks, and i was wondering, do i need to include the neutral safety switch, and brake switch, or will those even be necessary?
also getting the 4.8 sometime this weekend, from there i will begin the tear down, and rebuild process. i'll try my best to get some "eye candy"

five7kid 07-21-2011 10:19 AM

Quote:

Originally Posted by 1FSTBRD (Post 4978952)
Moderator, please delete this thread, it's gunna be a while before i can get around to ls swap

Why do you think we'd do that?

1SICK90RS 07-21-2011 10:20 PM

Re: another 5.3 LM7 build
 
idk, just figured that this thread was taking up valuable space and i was getting discouraged, now about the pedals??? kinda on the need to know basis, waiting to figure out what i need before i order them

1SICK90RS 07-24-2011 03:22 AM

Re: another 5.3 LM7 build
 
UPDATE: got the crappy 305 and 700r4 out a few hours ago, getting the 4.8 tomorrow.

1SICK90RS 07-24-2011 09:51 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by 1FSTBRD (Post 4985683)
ok guys, ordering my 4th gen pedals shortly from hawks, and i was wondering, do i need to include the neutral safety switch, and brake switch, or will those even be necessary?
also getting the 4.8 sometime this weekend, from there i will begin the tear down, and rebuild process. i'll try my best to get some "eye candy"

Anybody??? also found a tremec t56 transmission kit, is it suitable for a 5.3?

1nasty86 07-24-2011 10:19 AM

Re: another 5.3 LM7 build
 
I bought a nss from advance and I used my stock brake switch.

ronnjonn 07-24-2011 10:21 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by 1FSTBRD (Post 4988534)
Anybody??? also found a tremec t56 transmission kit, is it suitable for a 5.3?

Post up a link to the kit.

1SICK90RS 07-24-2011 10:28 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by ronnjonn (Post 4988561)
Post up a link to the kit.


http://www.americanpowertrain.com/GM...T56-Basic.html

1SICK90RS 07-24-2011 10:29 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by 1nasty86 (Post 4988556)
I bought a nss from advance and I used my stock brake switch.

so somewhere down the road i will end up needing the nss?

ronnjonn 07-24-2011 10:35 AM

Re: another 5.3 LM7 build
 
Wow!
If you have the funds, that'll get 'er done.
Heck, they probably even give you your choice of gear sets.

1SICK90RS 07-24-2011 10:39 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by ronnjonn (Post 4988578)
Wow!
If you have the funds, that'll get 'er done.
Heck, they probably even give you your choice of gear sets.

THEY DO, WHICH BRINGS ME TO THE NEXT QUESTION, WHICH GEARS ARE THE BEST TO GO WITH?

ronnjonn 07-24-2011 10:51 AM

Re: another 5.3 LM7 build
 
You shoulda seen this coming: Best for WHAT?
Surviving your future twin-turbo LS3 408? The 2.66 / 0.50 set. Strongest.
MPG? Same.
Driveability with a pure stock 5.3? depends on your axle ratio.
The 2.66 set has close ratios, good for keeping the revs down for MPG, or up for performance.
With close ratios, you don't have to rev as high before you can make each upshift. But when racing, the closer ratios keep the RPM from dropping below your powerband.
With that 0.50:1, and a 5.3, you'll probably need at least a 3.73:1 axle. Even so, that's about the same highway cruising result as a 700R-4 / 4L60E with a 2.73:1 axle.

1SICK90RS 07-24-2011 10:27 PM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by ronnjonn (Post 4988594)
You shoulda seen this coming: Best for WHAT?
Surviving your future twin-turbo LS3 408? The 2.66 / 0.50 set. Strongest.
MPG? Same.
Driveability with a pure stock 5.3? depends on your axle ratio.
The 2.66 set has close ratios, good for keeping the revs down for MPG, or up for performance.
With close ratios, you don't have to rev as high before you can make each upshift. But when racing, the closer ratios keep the RPM from dropping below your powerband.
With that 0.50:1, and a 5.3, you'll probably need at least a 3.73:1 axle. Even so, that's about the same highway cruising result as a 700R-4 / 4L60E with a 2.73:1 axle.

speak my language please:blah:

on another note, got the 4.8 today, due to weather and no place to work we just set her in the bay for now, pulling back out tomorrow to get measurements for motor mounts..

1SICK90RS 07-26-2011 02:24 AM

Re: another 5.3 LM7 build
 
here are a few pictures of the car, i will post pics of the motor and hood i got when i get the time to take them
http://i869.photobucket.com/albums/a...ro%20rs/12.jpg

http://i869.photobucket.com/albums/a...aro%20rs/3.jpg
http://i869.photobucket.com/albums/a...aro%20rs/4.jpg
http://i869.photobucket.com/albums/a...aro%20rs/5.jpg
http://i869.photobucket.com/albums/a...aro%20rs/6.jpg

http://i869.photobucket.com/albums/a...aro%20rs/9.jpg
http://i869.photobucket.com/albums/a...ro%20rs/10.jpg
http://i869.photobucket.com/albums/a...ro%20rs/11.jpg

1SICK90RS 07-26-2011 02:25 AM

Re: another 5.3 LM7 build
 
3 Attachment(s)
more pics

1SICK90RS 07-26-2011 02:27 AM

Re: another 5.3 LM7 build
 
3 Attachment(s)
...

ronnjonn 07-26-2011 08:04 AM

Re: another 5.3 LM7 build
 
Was it a theft recovery? All 4 tires flat, one shredded...gotta wonder

1SICK90RS 07-26-2011 08:19 PM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by ronnjonn (Post 4990518)
Was it a theft recovery? All 4 tires flat, one shredded...gotta wonder

na it wasn't a theft recovery, his son hit a tree a few years back and it's been sitting ever since, tires were completely dry rotted, but looked brand new before we put it on the trailer, it took us 5 hours to load it up, we started at 8:30 at night, finished up at 1:30 in the morning

1SICK90RS 07-27-2011 01:26 AM

Re: another 5.3 LM7 build
 
ok guys, i need your help loacating a few sensors, such as the MAF, and also i need to know what the coil control plugins look like...

1SICK90RS 07-28-2011 10:53 PM

Re: another 5.3 LM7 build
 
doing the wiring saturday, already got the motor back out and on the stand, goin to pertify it while it's out... planning on busting it off on the ground before it goes back in the car. pocket's "ls1 harness start to finish" thread is great help to anyone planning on doing the wiring themselves

88FormulaKiller 07-29-2011 07:09 AM

Re: another 5.3 LM7 build
 
hey i just wanted to give you this option on the T56, 93-97 LT1 T56's CAN be used in your swap, you have to change the front plate (mid plate, w/e u prefer) the input shaft and bellhousing to LS1 T56 parts. The 93 and 94 T56's are not as in demand due to lesser torque capabilites (93 M28 360 ft/lb, 94 M29 400 tq). Also the 93 M28's had a slightly different gear ratio. so id suggest 95-97 or the usual 98-02. I only tell people about this because you never know, you might find a random rebuilt or low mile T56 from one of those years cheap and when you swap the parts out, they can be sold to recoup the $$$. All parts needed to swap can be found on thegearbox. I couldnt find a reasonable low mileage or rebuilt 98-02 T56 so i bit the bullet and dropped $2K on an low mile MN12 from an 04 GTO. Good luck with whichever you decide.

1SICK90RS 07-29-2011 07:21 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by 88FormulaKiller (Post 4993676)
hey i just wanted to give you this option on the T56, 93-97 LT1 T56's CAN be used in your swap, you have to change the front plate (mid plate, w/e u prefer) the input shaft and bellhousing to LS1 T56 parts. The 93 and 94 T56's are not as in demand due to lesser torque capabilites (93 M28 360 ft/lb, 94 M29 400 tq). Also the 93 M28's had a slightly different gear ratio. so id suggest 95-97 or the usual 98-02. I only tell people about this because you never know, you might find a random rebuilt or low mile T56 from one of those years cheap and when you swap the parts out, they can be sold to recoup the $$$. All parts needed to swap can be found on thegearbox. I couldnt find a reasonable low mileage or rebuilt 98-02 T56 so i bit the bullet and dropped $2K on an low mile MN12 from an 04 GTO. Good luck with whichever you decide.

thanks, but i've decided to go 4l60e route for now, but i'll definately keep that in mind..

fun begins now, got all of the harness off of the 4.8 and i'm about to start stripping it down, now would be a great time for pocket to come in...:help:

Pocket 07-29-2011 07:41 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by 88FormulaKiller (Post 4993676)
hey i just wanted to give you this option on the T56, 93-97 LT1 T56's CAN be used in your swap, you have to change the front plate (mid plate, w/e u prefer) the input shaft and bellhousing to LS1 T56 parts. The 93 and 94 T56's are not as in demand due to lesser torque capabilites (93 M28 360 ft/lb, 94 M29 400 tq). Also the 93 M28's had a slightly different gear ratio. so id suggest 95-97 or the usual 98-02. I only tell people about this because you never know, you might find a random rebuilt or low mile T56 from one of those years cheap and when you swap the parts out, they can be sold to recoup the $$$. All parts needed to swap can be found on thegearbox. I couldnt find a reasonable low mileage or rebuilt 98-02 T56 so i bit the bullet and dropped $2K on an low mile MN12 from an 04 GTO. Good luck with whichever you decide.

93 T56's cant be used. You have to change the input shaft which has 1st gear cast into it. 93's have a different 1st gear ratio and the gears wont line use

Whats up fstbrd?

1SICK90RS 07-29-2011 07:50 AM

Re: another 5.3 LM7 build
 
right now i'm stripping down the harness unlooming it

1SICK90RS 07-29-2011 09:54 AM

Re: another 5.3 LM7 build
 
ok so right now i'm trying to remove the wires from the pcm mounting thingy, but i don't want to F**K anything up, is there a special way you remove the pins???

Pocket 07-29-2011 10:58 AM

Re: another 5.3 LM7 build
 
Not really, they're the easiest to get out of any connector on the harness. No special tools are needed

1SICK90RS 07-29-2011 11:11 AM

Re: another 5.3 LM7 build
 
Quote:

Originally Posted by Pocket (Post 4993828)
Not really, they're the easiest to get out of any connector on the harness. No special tools are needed

a little late pocket as i have all of the pins out, a thread on ls1tech taught me how:lmao:now just gotta untangle everything and repin, i still have the piece that went through the firewall of the truck, that's kinda holding me back right now, do i need to dismantle it as well?

Pocket 07-29-2011 01:23 PM

Re: another 5.3 LM7 build
 
Cut it off

1SICK90RS 07-29-2011 07:36 PM

Re: another 5.3 LM7 build
 
ok guys, wiring isn't bad at all, all i have left is to splice all of the grounds and IGN wires back together, and repin and then start on the 3rd gen harness

1SICK90RS 07-31-2011 12:17 AM

Re: another 5.3 LM7 build
 
not much of an update, but i'm still hung up on the wiring, probably would have been done yesterday but i've misplaced my black tape (gotta have alot of it) got the majority of the harness broke down and bundled up, still gotta break down the third gen harness and pin everything back up


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