8" vs. 9" convertor

How are you shifting? 1-2-3-3od or 1-2-2od-3od. Either way it's a big gear change.

Currently I go 1-2-3-OD in the quarter.

I tried 1-2-OD-3 and it slowed.


I run 1-2-3 in the eighth.


For refference, I used to go 1-2-OD in the 1/8th at 6200 trap RPM

and 1-2-3 in th 1/4 and trap at 6200

The new engine makes more power and 4.56 is too steep for it