87 GTA 5.7 faster than 88 GTA 5.7?
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Senior Member
Joined: Jul 2002
Posts: 511
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From: Detroit, MI
Car: 1987 Trans Am GTA
Engine: 5.7L 350 V8 TPI
Transmission: Automatic 700R4
Axle/Gears: 3.27
87 GTA 5.7 faster than 88 GTA 5.7?
According to this website by Edmunds, it puts the 87 GTA at 15.4 ET and the 88 GTA at 15.9. For a long time i couldnt figure why that was. And i just kinda went with it, and accepted.
But I THINK i know why its like that. I did some research and i noticed that the 87 GTA came standard with 3.27 rear-end. The 88 GTA came standard with the 2.77 rear-end, but had the option of a 3.27 rear-end.
I'm guessing that they tested standard on both, so the 87 had the rear-end advantage.
If that were true, would it gain .4 ET time with that rear-end difference?
What do u guys think? Think that could be it, or some other reason?
Check out the times:
http://www.geocities.com/edmodscarspecs/#Pontiac
But I THINK i know why its like that. I did some research and i noticed that the 87 GTA came standard with 3.27 rear-end. The 88 GTA came standard with the 2.77 rear-end, but had the option of a 3.27 rear-end.
I'm guessing that they tested standard on both, so the 87 had the rear-end advantage.
If that were true, would it gain .4 ET time with that rear-end difference?
What do u guys think? Think that could be it, or some other reason?
Check out the times:
http://www.geocities.com/edmodscarspecs/#Pontiac
Supreme Member
Joined: Aug 2001
Posts: 1,236
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From: Warwick,RI
Car: 88 IROC-Z/00 GTP/05 VUE Redline
Engine: LB9 305/3800 SC/3.5 SOHC V-TEC
Transmission: A4/A4/A5
Or the fact that they had terrible people driving those cars. I've seen test where the 87 IROC's were hitting 14.2's all stock. I don't know how some of these people test these cars with auto's and still manage to run over a second worse than another person.
Thread Starter
Senior Member
Joined: Jul 2002
Posts: 511
Likes: 0
From: Detroit, MI
Car: 1987 Trans Am GTA
Engine: 5.7L 350 V8 TPI
Transmission: Automatic 700R4
Axle/Gears: 3.27
Originally posted by 12 Sec GTA
I got my 87 GTA down to 14.80 bone stock.
I got my 87 GTA down to 14.80 bone stock.
Um, accoarding to the gtasourcepage.com , 87's with a 350 engine came in 2.73 and 3.27. All 88's with a 350 came in 3.27.
https://www.thirdgen.org/newdesign/tech/techdb.shtml
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