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69-72 · 03-02-2015, 10:47 PM

The two sills on either side of the wheel well are like this. The flanges not are ~1" on one side and ~1/2" on the other. The short cross sill in the middle is the same size but the flanges are equal ~1/2" each side.

These sills are the same as on a pickup. Probably would be easiest and best to get some bent up, I have had that done before.

If you can find a decent steel bed floor from a pickup you can use that as a replacement. Thats what I did, took a long bed floor and sectioned the back half and welded the Blazer specific front on it. You can use the crossmembers too, don't even need to take them off.

03-02-2015, 10:47 PM	#6
69-72 Registered User Join Date: May 2008 Location: 204 Posts: 903	Re: Cross sills questions The two sills on either side of the wheel well are like this. The flanges not are ~1" on one side and ~1/2" on the other. The short cross sill in the middle is the same size but the flanges are equal ~1/2" each side. These sills are the same as on a pickup. Probably would be easiest and best to get some bent up, I have had that done before. If you can find a decent steel bed floor from a pickup you can use that as a replacement. Thats what I did, took a long bed floor and sectioned the back half and welded the Blazer specific front on it. You can use the crossmembers too, don't even need to take them off. Attached Images __________________ 1969 Chevy Custom Camper 3/4 ton Rust free survivor 1972 Chevy Blazer CST 4x4 Almost Rust free survivor 1972 GMC Jimmy 2wd Undergoing surgery Last edited by 69-72; 03-02-2015 at 11:00 PM.