Frame measurement needed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

62CHEVYC10 · 12-14-2007, 02:18 PM

I am in the process of putting my 62 cab on a 81 3/4 ton chassis. I picked up a long bed chassis and I cut and shortedned it for my short bed 62. The measurement I need is from the rear spring shackle mount on the frame to the rear spring front mount. I need the measurement to be center of bolt head to center of bolt head. I dont need the spring length just the frame mount to frame mount holes were the springs mount in the front and were the shackle bolts on in the rear. My original front mounts for the rear springs were waisted along with the frame were I cut 15" out of it. I built my own front crossmember for the rear springs, just need to know were to put it. Thanks Dennis

OldCreek · 12-14-2007, 03:08 PM

I'm guessing....

I think stock springs for that era were 56".... therefore, eye to eye would be about 56".

On my '72 stock springs are 52" and I believe eye to eye is just under 52".

O'Course, I'm just guessing. I don't have that era truck.

cobinder · 12-14-2007, 04:17 PM

56" stock springs on my 80 3/4 ton. the bolt to bolt on mine is 55". I believe figure the location of the rear mount so the shackle can't can't swing too far and hit the mount when the spring flattens out. This distance can change depending on the amount of arch in your springs.

62CHEVYC10 · 12-14-2007, 05:06 PM

Thanks for the replys guys. I do have 56 inch springs. I figured the hole to hole distance was close to the spring length but just wanted to make sure.

The truck will never haul anything but me and the family and a cooler up to the sand dunes here in Michigan. Thanks again. Dennis

12-14-2007, 02:18 PM	#1
62CHEVYC10 Registered User Join Date: Jul 2006 Location: Howard City Mi. Posts: 16	Frame measurement needed I am in the process of putting my 62 cab on a 81 3/4 ton chassis. I picked up a long bed chassis and I cut and shortedned it for my short bed 62. The measurement I need is from the rear spring shackle mount on the frame to the rear spring front mount. I need the measurement to be center of bolt head to center of bolt head. I dont need the spring length just the frame mount to frame mount holes were the springs mount in the front and were the shackle bolts on in the rear. My original front mounts for the rear springs were waisted along with the frame were I cut 15" out of it. I built my own front crossmember for the rear springs, just need to know were to put it. Thanks Dennis

12-14-2007, 03:08 PM	#2
OldCreek Registered User Join Date: Jan 2007 Location: Central Coast California Posts: 1,026	Re: Frame measurement needed I'm guessing.... I think stock springs for that era were 56".... therefore, eye to eye would be about 56". On my '72 stock springs are 52" and I believe eye to eye is just under 52". O'Course, I'm just guessing. I don't have that era truck. __________________ 1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold 1972 C10 5.3L/4L60E 12bolt 5Lug - Sold 1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!! 1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold 1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold 1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold) 2003 K2500HD 8.1/Allison1000/NP263

12-14-2007, 04:17 PM	#3
cobinder Everything is work in progress Join Date: Apr 2006 Location: Denver Colorado Posts: 326	Re: Frame measurement needed 56" stock springs on my 80 3/4 ton. the bolt to bolt on mine is 55". I believe figure the location of the rear mount so the shackle can't can't swing too far and hit the mount when the spring flattens out. This distance can change depending on the amount of arch in your springs. __________________ Good luck with your truck! How much?! It's just an old truck part!! 49 International on a 80 GMC 3/4ton 4x4 chassis 48 International KB-5 2 ton dump bed 04 Honda CRF "500" 09 Honda CRF450 fuel injected rocket 03 Suzuki hayabusa carbonfiber wheeled monster. 02 Ford diesel stretch van (toy hauler) 01 38' Monaco diesel pusher motorhome

12-14-2007, 05:06 PM	#4
62CHEVYC10 Registered User Join Date: Jul 2006 Location: Howard City Mi. Posts: 16	Re: Frame measurement needed Thanks for the replys guys. I do have 56 inch springs. I figured the hole to hole distance was close to the spring length but just wanted to make sure. The truck will never haul anything but me and the family and a cooler up to the sand dunes here in Michigan. Thanks again. Dennis



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