99 t/a gears
Well first gas was going to be a little more and second driving on the highway was a thought too with a lower gear.I mean theres all pro and cons, its all what you want and what set up you have.Dont forget ls1 bird you need to tune your computer for your gear swap.
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Launching!
Joined: Dec 2008
Posts: 206
Likes: 0
From: Hammond,La
no one told me 3.73s were to much gear im wondering if 4.10 is though. i have 3.42s now thanx to an axle swap out of a totaled ss. i go to the track probably about once a month and to some old swamp road almost every friday and saturday night with some friends. what kind of gas milage can expect with 3.73s n a thunder racing tune?
TECH Resident
Joined: Feb 2006
Posts: 855
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From: Omahaish. Nebraska.
If you are an auto, you DON'T want 4.10s unless it's a strip only, or pure city car. the gas mileage will suffer badly with that gear ratio. I average around 24 mpg mixed city, highway with my 3.73 gears.
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3.42 would be perfect for you as a DD or track visit. I sold my 3.42's from my SS to a friend that put them in a 00' Z28. Car runs mid 10's on spray and he DD it until selling it. He had the best of both worlds...performance and everyday capability.
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Unless its an all out drag car, then dont do it. Stay with the gears you got or step up to the 3:73s. Very few went to 4:10s in an A4. But they also hit the track alot with a 27-28 inch tall tire.