| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | 5.25 hub diameter came on 55.2 trucks first, not know of earlier application. Perhaps someone added later parts, whole axle even? ‘54 could have been earlier application, perhaps rear was using up old parts, unusual though with two sizes on one truck.
Ed
Last edited by EdPruss; 12/11/2022 5:36 AM.
'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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