Difference between core support in 57 GMC and 57 Chevy - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Old57 · 07-11-2016, 01:29 AM

I have been searching for something to show the dimensions of the difference between the way the core support mounts on a 57 GMC and a 57 Chevy. The GMC is totally different and mounts lower and to the center of a crossmember, and the Chevy mounts on both sides of the frame rails. I have a GMC core support that I want to modify to mount like the Chevy version. Does anyone have anything that shows the dimension differences, or have both frames that could take measurements and let me know?

ChuckDriver · 07-12-2016, 04:36 PM

I cant give dimensions, but here are two photo's for comparison.

Old57 · 07-13-2016, 10:34 AM

Thanks for the pics

OldChevysRule · 07-15-2016, 07:41 PM

I have both frames. What measurements are you needing?

Old57 · 07-15-2016, 08:39 PM

Quote:

Originally Posted by OldChevysRule

I have both frames. What measurements are you needing?

That'd be great if you could get me some measurements, if it's not too much trouble. If I could get a measurement between the front cab mount center of holes to the GMC core support mount center of holes, a measurement between the front cab mount center of holes to the Chevy core support center of holes, and a measurement of how much lower the GMC core support mount is from the Chevy core support mounts. Thanks a lot!

07-11-2016, 01:29 AM	#1
Old57 Registered User Join Date: Apr 2015 Location: Wichita Kansas Posts: 455	Difference between core support in 57 GMC and 57 Chevy I have been searching for something to show the dimensions of the difference between the way the core support mounts on a 57 GMC and a 57 Chevy. The GMC is totally different and mounts lower and to the center of a crossmember, and the Chevy mounts on both sides of the frame rails. I have a GMC core support that I want to modify to mount like the Chevy version. Does anyone have anything that shows the dimension differences, or have both frames that could take measurements and let me know?

07-12-2016, 04:36 PM	#2
ChuckDriver A320 Pilot/USAF Retired Join Date: Mar 2009 Location: Charleston, SC Posts: 2,622	Re: Difference between core support in 57 GMC and 57 Chevy I cant give dimensions, but here are two photo's for comparison. Attached Images __________________ JJ My 1957 build: http://67-72chevytrucks.com/vboard/s...d.php?t=334552 http://www.trifive.com/forums/showthread.php?t=22037 Instagram - Chuckdriver57

07-13-2016, 10:34 AM	#3
Old57 Registered User Join Date: Apr 2015 Location: Wichita Kansas Posts: 455	Re: Difference between core support in 57 GMC and 57 Chevy Thanks for the pics

07-15-2016, 07:41 PM	#4
OldChevysRule Registered User Join Date: Mar 2014 Location: Theodore, AL Posts: 61	Re: Difference between core support in 57 GMC and 57 Chevy I have both frames. What measurements are you needing? __________________ Jason Trucks don't mind if you have another truck just for "running around town". My build thread: Double Jeopardy



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