I just had 3.73s installed on my '04 GT but RPMs seem to be lower than I thought they would be. I found these figures online...
2558 RPMs @ 80mph in 5th gear
2078 RPMs @ 65mph in 5th gear
2351 RPMs @ 50mph in 4th gear
50mph in 4th gear seems to be pretty straight but at 65mph in 5th gear I appear to be sitting more at 1800 RPMs, not 2078.
Haven't been on the highway since I drove the car home so I can't test out 80 MPH but I do believe at around 75mph I was below 2500rpms.
Does this sound correct? Are those bad numbers?
Car has the Diablo 87 tune including the 3.73 change and should be calibrated for 18" wheels. Rear wheels are 18x10 with 295/35/18.
Edit: Found these numbers on another forum...hmmm
80mph in 5th = 2421
60mph in 5th = 1815
40mph in 4th = 1952
Kinda makes more sense. I know there's probably along of things that factor in. Should only be a couple few hundred RPM difference from stock right?
2558 RPMs @ 80mph in 5th gear
2078 RPMs @ 65mph in 5th gear
2351 RPMs @ 50mph in 4th gear
50mph in 4th gear seems to be pretty straight but at 65mph in 5th gear I appear to be sitting more at 1800 RPMs, not 2078.
Haven't been on the highway since I drove the car home so I can't test out 80 MPH but I do believe at around 75mph I was below 2500rpms.
Does this sound correct? Are those bad numbers?
Car has the Diablo 87 tune including the 3.73 change and should be calibrated for 18" wheels. Rear wheels are 18x10 with 295/35/18.
Edit: Found these numbers on another forum...hmmm
80mph in 5th = 2421
60mph in 5th = 1815
40mph in 4th = 1952
Kinda makes more sense. I know there's probably along of things that factor in. Should only be a couple few hundred RPM difference from stock right?