99 Trans Am/ Auto
Thread Starter
Staging Lane
Joined: Mar 2013
Posts: 61
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From: Akron
99 Trans Am/ Auto Have a 99 Trans Am / Auto w I believe the 4L60E it has a 3600 Stal and im wondering if theres anything i can do to tighten the stal up.. Heard there was with some special fluid or something.. Anyone kno about this..??? Thanks
TECH Fanatic
Joined: Jan 2011
Posts: 1,358
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From: Michigan
What gears do you have? If you have 2.73s or even 3.23s it'll feel alittle loose. ( my 99 came with gu2=2.73s) A set of 3.73s will tighten it up alot. It's really the only way...When installed, either increase line pressure with a tune, or install a shift kit.
TECH Fanatic
Joined: Jan 2011
Posts: 1,358
Likes: 0
From: Michigan
2.73s are the shittiest gear ratio you can have. GMs pitch for a gas friendly ls1..I ditched mine as soon as I bought the car for 3.73s. Made a huge difference..Really woke the car up.. It "feels" like you pick up 40hp, throws your head back in your seat. Essentially your tires spin faster.
Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
2.73s are the shittiest gear ratio you can have. GMs pitch for a gas friendly ls1..I ditched mine as soon as I bought the car for 3.73s. Made a huge difference..Really woke the car up.. It "feels" like you pick up 40hp, throws your head back in your seat. Essentially your tires spin faster.
