Going from 2.73's to 3.90's, so excited I can't wait!!!

CobraStang95

Founding Member
Apr 9, 2002
84
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7
New Jersey
Well i started doing the gears in my car today after finishing the 24# injectors, pro-m mass air, 70mm tb, u/d pulley, electric fan and ac eliminator yesterday. The car felt way more responsive after just those things, so i can't even imagine what its going to be like going from 2.73's to 3.90's!!! haha anyone have 3.90's out there with similar setup? what do u run in the 1/4? how sick was the first test drive? im going to be finishing it up tomorrow so i cant wait!!:flag:
 
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Haha, actually my buddy had 4.10's with a stick and it was perfect in the 1/4... maxed out right after the line basically. I think im gonna be walkin around with a boner for the rest of the day tomorrow, thank god i work for a shop that i can borrow a repair plate from :flag:
 
You will love them! You should have enough rpm to turn a good MPH in the 1/4. I had a friend with 4.10's in his and he was running 12.7 with a stock motor and LOTS of NOS!! At 4500' elevation, no less.....
 
You are going to have a blast. I remember when I went from 2.73's to 3.73, and like everyone else is saying, its the biggest SOTP mod. Driving the car will be much more enjoyable. And you should be fine in the 1/4. I know lots of guys with mods close to yours with 4.10's doing fine.
 
when i had the AOD i had 2.73, then i went to 3.90s with the gay AOD and it was ok, you could feel it.

Once i did the t5 swap, better gear ratios in the t5, then i could really feel the difference.
the t5 swap made more of a difference then the gears did for me. they went hand in hand.