Originally Posted by Grigg
Originally Posted by GreenGMC
What axle ratio would you want with the 4BT/TH400 to give a decent cruise?


So, some rough figuring: 33" tires, no OD, 70 mph, and 1,650 rpm says you need a 2.3 rear axle ratio.

Grigg

Yikes! Overdrive it is. I was hoping to to just pull the engine out of a P30 and stick it in a bolt. Out of curiosity, what axle do they run in the P30?