3.23 to 3.73
with a high stall converter:
.1 & 1 mph
with a stock converter:
.2 & 2 mph
Sometimes people see higher gains, but most of the extra gain came from improving their shift points (done when they got their speedo corrected).
Shift kits are nice but not necessary. If you firm shifts electronically, do not overdue it or you can damage the tranny.


