I have a 97 Z28 6 speed and i have a set of 3.73's that im getting put in soon and was wondering what rpm i should expect to run in 6th gear at 60 mph and if anyone knows an 1/8 mile time i should expect to run with 3.73's and a power programmer??

 

I'm wanting to go with 3.73s and i would also like to know. Will we gain much in the quarter or is it such a small jump from 3.42 to 3.73s that we wont be able to tell?

 

1469 rpms

Sorry I didn't track my car before the rearend work. The 3.73s and 1le driveshaft did make the car feel as if it went on a 400 lb diet, nice noticeable gain.

If i was doing it again my preference would be 3.90s, 3.73s, then 4.10s.

-brent

 

i've heard 3.73's aren't enough. When i wanted gears i ordered 4.10's. I never got to put them in though because i just went with this 8.8 and got 3.90's. I love'em they shoud make 3.90's for the 7.5.

 

If you've got an A4, i'd get 3.73's ......M6, 4.10's.

A manual car with 4.10's will run less rpm's then an A4 car with 3.23's at the same speed.

 

Hey Z95m6, you wouldnt happen to want to sell those 4.10s would ya? Email me if ya do. dj317@hotmail. com

 

already did about 2 months ago sorry.

 

3.73's wont change a six speed car much. You'll go from 1400ish rpms to maybe 1600 or 1700 at 60. If its not too late go with 4.10s.