Re-gearing
Thread Starter
Heel & Toe
Joined: Sep 2004
Posts: 24
Likes: 0
Re-gearing
A new member here. I have a -95 automatic with 2,59 gears in the differential. When I drive in 80mph in fourth gear the engine turns 2000rpm,what rpm will I have in the same speed if I go to a 3,08 or a 3,54? 
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
The difference between 2.59 and 3.07, is .48. The percentage difference is .48/2.59 = 18.53%. Or easier still, 3.07/2.59 = 1.1853. 2000 rpms times 1.1853 = 2370 rpms.
Do the 3.45s the same way. 3.45/2.59 = 1.3320. 2000 rpms X 1.3320 = 2664 rpms.
Simple arithmetic.
RACE ON!!!
Do the 3.45s the same way. 3.45/2.59 = 1.3320. 2000 rpms X 1.3320 = 2664 rpms.
Simple arithmetic.
RACE ON!!!
