V-6 to V-8 conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

john@thepier · 11-19-2007, 12:26 PM

I,m swapping a v-8 into my 67 GMC 4x4 I have the v-8 engine crossmember. Who knows for sure if it is supose to bolt up in the same holes as the v-6 member came out of. The holes line up, but I am concerned with proper engine set back.

JAKES 68GMC · 11-19-2007, 10:18 PM

There should be another set of open bolt holes behind what the V6 crossmemeber bolts to on the frame. put the back holes in the v8 crossmember in these holes. the front crossmember holes should line up with the back of the v6 crossmember holes.

thats how it was for my truck, no drilling required.

11-19-2007, 12:26 PM	#1
john@thepier Senior Member Join Date: Aug 2004 Location: Lake Geneva, WI 53147 Posts: 970	V-6 to V-8 conversion I,m swapping a v-8 into my 67 GMC 4x4 I have the v-8 engine crossmember. Who knows for sure if it is supose to bolt up in the same holes as the v-6 member came out of. The holes line up, but I am concerned with proper engine set back.

11-19-2007, 10:18 PM	#2
JAKES 68GMC Aluminum slot wheels rule... Join Date: Jan 2006 Location: Maine Posts: 6,212	Re: V-6 to V-8 conversion There should be another set of open bolt holes behind what the V6 crossmemeber bolts to on the frame. put the back holes in the v8 crossmember in these holes. the front crossmember holes should line up with the back of the v6 crossmember holes. thats how it was for my truck, no drilling required.



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