I can certainly understand were your coming from. I have a 63 3/4 with an Eaton and 4.11 rear axle ratio. I pulled the sm420 and replaced it with a A833, 4th is an overdrive. The drive shaft had to be shortened a little over 9 inches. Problem solved now instead of 3300 at 65 I'm doing 2300.

Now do you also want to soften the ride by going to 1/2 ton suspension? If so I would say find a donor truck and swap everything over.

ttt

Larry

Last edited by LGriffin; 12/29/2007 5:32 AM.
I don't own a vehicle that isn't old enough to drink.