
05-22-2010, 03:09 PM
|
 |
Half-Ass Member
|
|
|
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
|
|
Not Ranked
Quote:
Originally Posted by dcdoug
My tach shows I'm turning closer to 2000 RPM @ 70mph. Maybe a touch over that, but not 2,500.
|
There's several Speed/RPM Calculators on the 'net. You can double check me, but I'm pretty sure a 3.31 rear and the .82 5th gear gives you 2500 RPM at 70 MPH. But I could always be wrong....
|