| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | If you have the 10 on 7.25" rear, 5 on front, one can use both P3000 or P3500(single speed), however, the front will be wider than the fenders, but have disc brakes, look through the past posts about modern spindles on original axles, may leave the axle in place, rear axle has lots of rarios, disc brakes to match front, can use 22.5 wheels(hard to find) w/ these axles. 19.5 wheels easy to find, look too small for fenders, though.
Make sure to choose the correct gears to go w/ whatever engine you use, don't overgear it. Can use 4 or 5 speed w/ granny
for load starting or truck auto.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
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