stock # as in gear's what kind of tranny etc...

 

auto:
4L60E....
if you can select 1st gear...3.23 gears
if you can't...2.73

manual
T56 with 3.42 gears

 

I also think if you have an auto and your speedo only goes to 110 then you have 2.73's if it goes to 150 you have 3.23's. If you have a 6spd you have 3.42s. All this is if someone hasn't tinkered with your car ahead of time.

 

[QUOTE=Z95m6]I also think if you have an auto and your speedo only goes to 110 then you have 2.73'sQUOTE]

110 is for V6 cars, all v8s have a 150 speedo. Teke is correct but I have heard of some manuals coming with 3.23 gearing as well.

 

[QUOTE=Kataklysm]No you can get V8s with 110 speedo's and speed limiters installed. It was dependent on wether or not your car was ordered with Z rated tires. You are correct about manuals having 3.23's. I believe 93 6spds could be ordered with 2.73's or 3.23's. All later years are 3.42's

 

so what do i have on a 94 z28 six speed would really help for a mad z tune

 

Your car should have the 3.42's

And yes.. a V8 car could be had with the 110 speedo, my '94 Formula had one.

 

Get in the glovebox and give us the code that starts with GU ...

 

I knew the not Z rated tire cars were limited to 110 but never knew the speedo went to 110, that sucks

 

Yeah, my friends 94 was that way.. by the way hitting a 110mph limiter in a 6 speed z...kinda hurts actually. Your hauling *** then wham! Not cool