56 frame measurement help ! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bobinbc · 11-12-2010, 01:25 AM

Can someone who has a bare 55-56 frame get a measurement for me? With the frame sitting level front to back, is there a difference from the top to the floor at the very back compared to top to the floor in the middle of the frame?

So if both X's are the same height from the floor is distance A the same as B and X ?? Mine is lower at "A"

All help would be appreciated

THX

dwcsr · 11-12-2010, 01:48 AM

Its the same up to the first X just forward of the front axle center line it slops down

bobinbc · 11-12-2010, 02:11 AM

Thanks Dave
That's what I thought it should be too, flat from front to rear except for the drop right at the front. But when I checked my frames they both seem to drop a bit at the very back (A) in the picture..... or maybe I should say droop??

can anyone confirm or deny by actual measurement?

dwcsr · 11-12-2010, 09:30 AM

I'm sure they all droop a little after all these years. If its not more that 1/2" I wouldn't worry about it or if it droops evenly I would'nt worry. The cross measure is more important if your starting a build with an after market suspension. I'll look in my books and see if I can get an actuall measurement for you.

11-12-2010, 01:25 AM	#1
bobinbc Registered User Join Date: Mar 2009 Location: Vancouver Island, Courtenay B.C. CANADA Posts: 576	56 frame measurement help ! Can someone who has a bare 55-56 frame get a measurement for me? With the frame sitting level front to back, is there a difference from the top to the floor at the very back compared to top to the floor in the middle of the frame? So if both X's are the same height from the floor is distance A the same as B and X ?? Mine is lower at "A" All help would be appreciated THX __________________ 1962 Chevy blue SBFS 1957 Chevy yellow SBSS 1956 GMC red SBSS Nov 2017 ToTM https://www.facebook.com/groups/Cana...geChevyTrucks/ Last edited by bobinbc; 11-12-2010 at 10:09 AM.

11-12-2010, 01:48 AM	#2
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,131	Re: 56 frame measurement help ! Its the same up to the first X just forward of the front axle center line it slops down

11-12-2010, 02:11 AM	#3
bobinbc Registered User Join Date: Mar 2009 Location: Vancouver Island, Courtenay B.C. CANADA Posts: 576	Re: 56 frame measurement help ! Thanks Dave That's what I thought it should be too, flat from front to rear except for the drop right at the front. But when I checked my frames they both seem to drop a bit at the very back (A) in the picture..... or maybe I should say droop?? can anyone confirm or deny by actual measurement? __________________ 1962 Chevy blue SBFS 1957 Chevy yellow SBSS 1956 GMC red SBSS Nov 2017 ToTM https://www.facebook.com/groups/Cana...geChevyTrucks/ Last edited by bobinbc; 11-12-2010 at 02:12 AM.

11-12-2010, 09:30 AM	#4
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,131	Re: 56 frame measurement help ! I'm sure they all droop a little after all these years. If its not more that 1/2" I wouldn't worry about it or if it droops evenly I would'nt worry. The cross measure is more important if your starting a build with an after market suspension. I'll look in my books and see if I can get an actuall measurement for you.



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