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cayoterun · 12-18-2007, 01:02 PM

Frame Stretch?
Not having much luck finding a '73-'87 155" frame.

Was wondering about stretching the '79 131.5" frame to fit the length I need. The frame rails on it are 8" deep.
Will ordinary 7.5-8" channel iron work for the added length or does it take frame metal? I'd fish plate it in addition to the vertical welds.
I know frames have to flex, so didn't know whether it would try to fatigue and break. Any advice?

Have run 80 gallons of propane thru the V-12. She's old, tired, and worn, but runs. Maybe can find a better one someday.
Thanks,
Cayoterun

12-18-2007, 01:02 PM	#149
cayoterun Junior Member Join Date: Dec 2006 Location: Guymon, Oklahoma Posts: 2,040	Re: GMC V-12 powered '91 Chev crewcab Frame Stretch? Not having much luck finding a '73-'87 155" frame. Was wondering about stretching the '79 131.5" frame to fit the length I need. The frame rails on it are 8" deep. Will ordinary 7.5-8" channel iron work for the added length or does it take frame metal? I'd fish plate it in addition to the vertical welds. I know frames have to flex, so didn't know whether it would try to fatigue and break. Any advice? Have run 80 gallons of propane thru the V-12. She's old, tired, and worn, but runs. Maybe can find a better one someday. Thanks, Cayoterun __________________ Cayoterun Okla. Panhandle I think I'll do it myself and pay the extra $500.