Originally Posted By RM23U0A
Yes, It has been done went from 3.91 to 2.76 on an AAR auto. and 3.23 on another 340 car. The rpm`s dropped to 2600 at 60 with the 2.76. I used a short tire. Drag racing performance changed little; just had to manually shift once in the quarter. Did not need third. Good luck, Wayne


I'm having a bit of trouble processing a change from 3.91 to 2.76 having "little" change on drag racing performance.

In fact, I'm having a LOT of trouble with that....