gmcbaseball,
let me tell you, the old ways of messing with engines comes right back in an instant! Thirty five years means nothing as far as that goes.

Is your truck a 1/2 Ton or is it a heavier model. That will affect your gearing options.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!