| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | GM tapers the front frame at the front, others may also. On my '37 frame, I found some longer springs( for a better ride) from similar weight vehicle, two leaf setup, and anchored spring at front instead of rear(for a better ride, again) which required offset to make springs parallel, new shackle mount(at rear) straddled frame as normal.
Sounds more complicated than doing it.
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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