The 1947 - Present Chevrolet & GMC Truck Message Board Network - C10 vs c20 front crossmembers are they the same?

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dragn91

04-28-2016 07:23 AM

C10 vs c20 front crossmembers are they the same?

I want to section a crossmember for my c20 so I have it ready for when I swap the engine in a couple months. I can't find a definitive answer on if the c10 crossmembers are the same as a c20. I have access to a lot more c10 parts than c20. Anyone know for sure? I know the c20 uses larger u bolts on the lower arms but can I just drill those larger?

SCOTI

04-28-2016 09:49 AM

Re: C10 vs c20 front crossmembers are they the same?

Lower shaft u-bolts aren't different. The upper shaft studs are 9/16" for C20/30 & 1/2" for C10's. The x-members will interchange but will require using the correct upper arms for the specific x-member.

dragn91

04-28-2016 12:10 PM

Re: C10 vs c20 front crossmembers are they the same?

Can i just drill them out and run grade 8 bolts and put the 3/4 ton arms on when I swap them?

SCOTI

04-28-2016 01:05 PM

Re: C10 vs c20 front crossmembers are they the same?

Quote:

Originally Posted by dragn91 (Post 7576002)

Can i just drill them out and run grade 8 bolts and put the 3/4 ton arms on when I swap them?

Yep.

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