| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | There are books that tell which PTO goes with which gearbox, but they are few and far between plus the numbers on them are easily damaged so no info is available. I have two from 420’s, don’t know the numbers, though.
Whenever removing a PTO I always stamp what box it came off.
Ed
'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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