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Honest thoughts on my 383 swap?

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Old Apr 12, 2021 | 08:36 PM
  #1  
9sinthe86TA's Avatar
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From: MI
Car: 1986 Pontiac Trans Am WS6
Engine: 383 Stroker
Transmission: TCI 725hp built 700R4
Axle/Gears: 94 Camaro 10 bolt. Posi 3.23
Honest thoughts on my 383 swap?



Anyone's personal thoughts about how my motor looks?

This photo was taken about 2 weeks ago, since then I swapped a better carb on it, broke the cam in, and got it running, and ran it around for a bit. I'm just currently waiting for the muffler shop to open up so I can get a Y pipe lol.
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Old Apr 12, 2021 | 10:17 PM
  #2  
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From: Safford, AZ
Car: 1992 RS
Engine: 305 (LO3)
Transmission: 700R4
Axle/Gears: 2.73?
Re: Honest thoughts on my 383 swap?

Looks to be a SBC with aluminum heads, a single plane and 600? CFM carb. Any Specs?
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Old Apr 12, 2021 | 10:39 PM
  #3  
9sinthe86TA's Avatar
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From: MI
Car: 1986 Pontiac Trans Am WS6
Engine: 383 Stroker
Transmission: TCI 725hp built 700R4
Axle/Gears: 94 Camaro 10 bolt. Posi 3.23
Re: Honest thoughts on my 383 swap?

Originally Posted by gwarren007
Looks to be a SBC with aluminum heads, a single plane and 600? CFM carb. Any Specs?
1978 3970010 4 bolt main block. Decked, honed and bored out .030 overEagle 5.7 inch rod 383 stroker kitFlat top keith black pistons and forged I beam rodsCam is a Comp 280H .480/.480 lift 230/230 duration on a 110lsa
Heads are dart 64 cc aluminum SHPs. 200cc intake 2.02 intake and 1.6 exhaust I thinkIntake is a victor jr and the carb was a holley vacuum secondary 750 but its been swapped for a proform 750 double pumper
Regular bog standard HEI with accel ceramic wiresAnd headers are hooker 1 5/8 longtubesCompression ratio is right at 10.6 and it runs on 93 easily And the valve covers were just cool thing I always wanted to own lol
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Old May 3, 2021 | 05:17 PM
  #4  
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From: St. Cloud, MN
Car: 1984 Trans Am
Engine: LS1383 in work
Transmission: Magnum F - to be installed
Axle/Gears: Zexel Torsen 3.73, 28-spline mosers
Re: Honest thoughts on my 383 swap?

Looks like it'll be a fun ride! Did you dyno the engine before installing it? If not, I'm curious to see what it puts down once you get it going.
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Old May 3, 2021 | 06:17 PM
  #5  
9sinthe86TA's Avatar
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Joined: Sep 2020
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From: MI
Car: 1986 Pontiac Trans Am WS6
Engine: 383 Stroker
Transmission: TCI 725hp built 700R4
Axle/Gears: 94 Camaro 10 bolt. Posi 3.23
Re: Honest thoughts on my 383 swap?

Originally Posted by Ozz1967
Looks like it'll be a fun ride! Did you dyno the engine before installing it? If not, I'm curious to see what it puts down once you get it going.
Oh yeah, she's real fun, runs like nothing I've ever been in,=. I've put 1100 miles on it so far and no issues. Sadly thanks to where I live there are no dynos around me. But I did run it down the 1/8th mile before and after. Before 10.25@67mph. After 8.39@87mph. Not bad for a 3400 pound car with a stock converter and 2.77 gears
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Old May 3, 2021 | 11:58 PM
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From: South Ms
Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: Honest thoughts on my 383 swap?

Looks good I like it 👍. Get some gears+ T/C in it and I bet it will take off like a rocket! Probably break into the high7s
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Old May 4, 2021 | 12:00 AM
  #7  
9sinthe86TA's Avatar
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Joined: Sep 2020
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From: MI
Car: 1986 Pontiac Trans Am WS6
Engine: 383 Stroker
Transmission: TCI 725hp built 700R4
Axle/Gears: 94 Camaro 10 bolt. Posi 3.23
Re: Honest thoughts on my 383 swap?

Originally Posted by dmccain
Looks good I like it 👍. Get some gears in it and I bet it will take off like a rocket!
Hell yeah. The thing takes off like a rocket now. I can't imagine it with like a 3.42 or something like that
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Old Jun 21, 2021 | 07:06 PM
  #8  
1badcj8's Avatar
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From: Silver City, NM
Car: 89 Iroc Z G92
Engine: 5.7 HO
Transmission: 700R4
Axle/Gears: 3.43
Re: Honest thoughts on my 383 swap?

Is your car an Iroc or Z28 - neither? What fuel delivery did have before this swap?
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Old Jun 21, 2021 | 08:53 PM
  #9  
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From: 212 is up in this Bit@#
Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Honest thoughts on my 383 swap?

The Engine looks great!


I would strongly consider changing the Intake-Manifold to the Edelbrock Performer-RPM Air-Gap instead...
Unless you are making peak HP at 7,000 RPM or higher.
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Old Jun 22, 2021 | 08:03 AM
  #10  
9sinthe86TA's Avatar
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Joined: Sep 2020
Posts: 78
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From: MI
Car: 1986 Pontiac Trans Am WS6
Engine: 383 Stroker
Transmission: TCI 725hp built 700R4
Axle/Gears: 94 Camaro 10 bolt. Posi 3.23
Re: Honest thoughts on my 383 swap?

Originally Posted by 1badcj8
Is your car an Iroc or Z28 - neither? What fuel delivery did have before this swap?
Neither, it's a Trans Am. I'm just using the stick TPI Fuel pump going into a Mallory fuel pressure regulator
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Old Jun 22, 2021 | 08:05 AM
  #11  
9sinthe86TA's Avatar
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Joined: Sep 2020
Posts: 78
Likes: 14
From: MI
Car: 1986 Pontiac Trans Am WS6
Engine: 383 Stroker
Transmission: TCI 725hp built 700R4
Axle/Gears: 94 Camaro 10 bolt. Posi 3.23
Re: Honest thoughts on my 383 swap?

Originally Posted by vorteciroc
The Engine looks great!


I would strongly consider changing the Intake-Manifold to the Edelbrock Performer-RPM Air-Gap instead...
Unless you are making peak HP at 7,000 RPM or higher.
​​​​​​
I was thinking about it, but I had a victor jr laying around, and it pulls hard up to 6500 and coul go more if the cam didn't run out. Plus I'm really happy with the victor jr's performance so far
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Old Jul 19, 2021 | 10:08 AM
  #12  
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From: South Lyon, MI
Car: 1989 IROC-Z
Engine: 5.0 Liter TPI
Transmission: 5-speed Manual
Axle/Gears: 3.45:1
Re: Honest thoughts on my 383 swap?

I like the fact that you have aluminum heads on your new engine. Anytime that you can get weight off of the front end of the car, you are moving in the right direction.
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Old Jul 19, 2021 | 04:22 PM
  #13  
9sinthe86TA's Avatar
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Joined: Sep 2020
Posts: 78
Likes: 14
From: MI
Car: 1986 Pontiac Trans Am WS6
Engine: 383 Stroker
Transmission: TCI 725hp built 700R4
Axle/Gears: 94 Camaro 10 bolt. Posi 3.23
Re: Honest thoughts on my 383 swap?

Originally Posted by swerv52
I like the fact that you have aluminum heads on your new engine. Anytime that you can get weight off of the front end of the car, you are moving in the right direction.
Yeah, she weighs 3380 so it dropped 100ish pounds from aluminum heads and intake.
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