This is a discussion on 3:73 upgrade within the Drivetrain forums, part of the LSx Technical Help Section category; I just changed my gears to a 3:73 and was curious to see what kind of difference does it usually ...
08-07-2010, 04:44 PM #1
I just changed my gears to a 3:73 and was curious to see what kind of difference does it usually make. I have a 01 m6 camaro ss with an exhaust. I was just curious to know what kind of difference would it make on my mpg and 1/4 mile run.
08-08-2010, 02:32 AM #2
- Join Date
- Jun 2008
- 1998 Z28
since you have an M6,which would have had 3.42s',and you made the smallest gear change to 3.73s',I'm guessing a drop of 1 mpg and a .2 ET reduction.
08-17-2010, 08:33 AM #3
With an M6 I would have gone with 4.10s. My 93 T/A would still get 18 MPG with 4.10s.
08-18-2010, 06:18 PM #4
It doesn't change much- about 7% difference between stock and 3.73. I got about 16.5 mpg in city and 23 on highway down a little from 17/24. I'm about to upgrade to a 4.11 in my new rear so things are about to change again!2000 Pontiac Firehawk #0041 of 742
08-18-2010, 06:34 PM #5
The 02 M6 I had got 26ish MPG on drive I made a couple times a month from central GA to Fayetteville, NC. I got 18-20MPG around town normally unless it was a Friday night of playing. Then I got about 12 MPG. All of that was with 3.73s.
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