ET gains from 3.73
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Member
Joined: Oct 2002
Posts: 382
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From: Winnipeg,MB,Can
Car: 1991 GTA
Engine: 5.7L L98
Transmission: 4L60
Axle/Gears: 3.23
ET gains from 3.73
Straight stock GTA with RamAir mod and Nitto DRs..would there be any reduction in E.T changing out from 3.23s to 3.73s. Im aware im going to loose topend. i can deal with that later.
Supreme Member
Joined: Apr 2003
Posts: 3,563
Likes: 1
Car: 1991 RS Camaro (Jet Black)
Engine: 95 383 CI (6.3) LT1
Transmission: 95 T-56
Im pretty sure it won't be a pretty steep gain. I remember reading one site that had done the ls1 swap and he upgraded to 3.73's and got a tiny but noticable gain. Its when you switch from 273's or so you can see a noticable gain I believe. You will get a gain none the less.
Senior Member
Joined: Nov 2003
Posts: 953
Likes: 0
From: Waterloo, Iowa
Car: 1992 Camaro RS 25th Aniversarry Edition
Engine: 305
Transmission: TH-700-R4
Axle/Gears: 10 bolt with 3.23's and SLP Posi.
ive seen some people go from a 2.73 to a 3.73 and drop a full second off of their ET no 3.23 is exactly in the middle of the two so i would venture a guess of .5 quicker ET
Supreme Member
Joined: Jul 1999
Posts: 1,011
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From: Saskatoon, Saskatchewan, Canada
Car: 86 Trans Am
Engine: 406
Transmission: TH350, 4200
Axle/Gears: Moser 9", 3.89
Cam...it depends on lots of variables like tire size and the engines power curve. I would imagine that stock TPI cars don't improve a whole lot as they peak quite low in RPM. You don't want to be out of your power band when you are at the top end of the track.
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