rwhp
Thread Starter
Instructor
Joined: Jan 2006
Posts: 160
Likes: 1
rwhp
Got a question..I have a 99 vert..6 spd that registered 430 rwhp..at the time I had 3:90 gears..now that I have the 3:42 gears back in the car..will my readings stay the same as far as rwhp and torque..any input would be appreciated?
Thanks
Thanks
Le Mans Master
Joined: Aug 2007
Posts: 6,475
Likes: 297
From: Orange Park FL
The 342 gear will read higher dyno numbers but I doubt nothing to even think about
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
The axle ratio will still change the gearing, regardless of using 4th gear for dyno pulls. I have no experience re-dynoing after just changing rear, but I've read that it does make a small difference in numbers.
Le Mans Master
Joined: Jan 2009
Posts: 6,226
Likes: 33
From: Morton illinois
St. Jude Donor '14-'15
Racer
Joined: Apr 2011
Posts: 328
Likes: 12
From: frankfort new york
do you still have the 390 ring and pinion??? also what was your cruising rpm at around 70mph??? i have a 01 6spd and was thinking about changing out the gear ratio to get some extra light to light response but would like to keep my mpg on the hwy
