Frame and rearend decode? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevydog66 · 04-01-2009, 03:07 PM

Frame # is 5-8--31 3935806-447

rearend # is NF3896838

What year is my frame and rearend?

**LockDoc** · 04-01-2009, 10:06 PM

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Where are you getting that frame number from? If it is from the side of the frame it may not be the one you want. The frame serial number is stamped on top of the rail by the steering box. It should match the VIN number. I'm not sure if this works for GMC's or not but on the Chevy's the rear end code is stamped on the passengers side axle tube. Pic included. If you find a two or three letter code go to this web site to look it up.

http://www.americanclassic.com/paint.htm

Please let us know if this works for the GMC's. Thanks.

LockDoc

chevydog66 · 04-01-2009, 10:31 PM

This # is from a Chevy frame that I purchased. I have sent it to get powdercoated, and I dont know what year it is. I need to order the new S/S brake lines but don't remember exactly where the hard and flex lines were mounted, because there is a difference between the 71 and 72 frames. I called the guy that is coating it and he gave me those #'s.

04-01-2009, 03:07 PM	#1
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Frame and rearend decode? Frame # is 5-8--31 3935806-447 rearend # is NF3896838 What year is my frame and rearend? __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up

04-01-2009, 10:06 PM	#2
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,803	Re: Frame and rearend decode? - Where are you getting that frame number from? If it is from the side of the frame it may not be the one you want. The frame serial number is stamped on top of the rail by the steering box. It should match the VIN number. I'm not sure if this works for GMC's or not but on the Chevy's the rear end code is stamped on the passengers side axle tube. Pic included. If you find a two or three letter code go to this web site to look it up. http://www.americanclassic.com/paint.htm Please let us know if this works for the GMC's. Thanks. LockDoc Attached Images __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

04-01-2009, 10:31 PM	#3
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Re: Frame and rearend decode? This # is from a Chevy frame that I purchased. I have sent it to get powdercoated, and I dont know what year it is. I need to order the new S/S brake lines but don't remember exactly where the hard and flex lines were mounted, because there is a difference between the 71 and 72 frames. I called the guy that is coating it and he gave me those #'s. __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up

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