When shortening frames, it is relatively easy to take a piece out behind the cab, rather from the end which involves drilling all new holes for the suspension. Cutoff wheel in hand held grinder makes a cleaner and more accurate cut than a torch. Flange bolts spread load and are handier than using washers.
One item to consider when shortening the frame, expansion cracks on concrete roads can cause more bucking without adjusting the suspension! Bucking is a function of wheelbase and speed, and of course amplitude of cracks. little can be accomplished by lightening suspension!
Ed
Last edited by EdPruss; 03/30/202312:33 PM.
'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.
