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Old 03-28-2017, 09:28 PM   #1
oldpurple
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Join Date: Feb 2005
Location: Saskatoon, SK
Posts: 97
Dual hump crossmember swap

I'm just wondering if anyone that has done this swap has any info or tips on it. I have a '79 with the catalytic convertor style crossmember and would like to swap to the older 'dual hump' style.

Some issues I can see now is that the lower leg of the frame rail on the driver's side is on a bit of an angle (to clear the cat). Has anyone modified the crossmember to match the angle? Or tried to tweak the frame to level it out a bit to help with fitting the dual hump crossmember?

Another issue I can see is the bracket for the parking brake will be in the way, and possibly the cable itself.

Anyone have any insight on this? Info or pics would be much appreciated.
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Old 03-28-2017, 10:52 PM   #2
69heavychevy
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Join Date: Jan 2007
Location: Garland,TX
Posts: 431
Re: Dual hump crossmember swap

I swapped over to that x-member to better clear my dual exhaust. The only thing I did was drill a new front mounting hole on the drivers side. The frame also seemed to be a tiny bit narrower. Had to use some alignment bars to get the bolts through.
I think the parking brake cables were an issue. Mine were shot so I just removed them. I'll eventually try to figure something out with that.
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