Originally Posted by 10secGTX
Originally Posted by AndyF
Originally Posted by Al_Alguire
Shes working pretty good as the MPH shows less power than the ET does. Signs of a good working combo...


I think that might be because he has 4.30 gears and it is laying over in the lights since it is past the power peak. Just my guess. He is going to swap over to 3.90 gears to see what happens.


Any thoughts on this ... 3.90 gears vs 4.10 I have both sets ..


My advice would be the 3.90 gears. I don't think you'll see enough difference with 4.10 gears to make it worth the time it takes to swap gears. Put the 3.90 gears in there and see what she does. I think it will pick up a little top end speed and the ET won't change much. It really depends on the torque converter. The 3.90 gears will loosen up the converter a touch which will change some things. It could make the car quicker or slower depending on how the chassis reacts. You might have to adjust the shocks or the tire pressure to keep it launching hard.