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J Knight · 08-01-2012, 08:54 PM

I converted to this crossmember without using the top braces in my 78 GMC 1/2 SWB 350ci/TH350 with no issues other than having to drill mounting hole on the lower left side frame flange. I do know they are in 73-76 1/2 tons, not sure how long they were used in 3/4 and 1 tons. I plan on using this one on my 82.

08-01-2012, 08:54 PM	#2
J Knight Registered User Join Date: Jun 2011 Location: Baytown TX Posts: 2,219	Re: Calling all "Double Hump" crossmembers. I converted to this crossmember without using the top braces in my 78 GMC 1/2 SWB 350ci/TH350 with no issues other than having to drill mounting hole on the lower left side frame flange. I do know they are in 73-76 1/2 tons, not sure how long they were used in 3/4 and 1 tons. I plan on using this one on my 82. Attached Images __________________ John 82 Chevy Silverado 350ci/TH350