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| | | Forums66 Topics128,051 Posts1,055,762 Members48,426 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | What is the width outside to outside on the Shortbed Stepside frame rails? What is the outside to outside on the same year fleetside? Thanks
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Nov 2004 Posts: 2,402 Former Workshop Owner | | Former Workshop Owner Joined: Nov 2004 Posts: 2,402 | I would think it'd be the same.
John
~ J Lucas 2006 GMC Envoy 4.2 I6 2023 Ram 2500/Cumins 6.7 I6 2010 Jeep Grand Cherokee (Wife’s) 2002 Silverado 2500 Gas 6.0 1941 Chevy 1/2-Ton 1942 Chevy 1.5-Ton SWBIn the Gallery My Flicker Photos! | | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | The issue is; I purchased a new chrome rear bumper and new rear brackets. Double checked and triple checked the part numbers. The bumper was from LMC and the proper rear brackets were from Summit Racing. The brackets when bolted to the frame in the correct orientation do not remotely come close to matching the holes in the bumper. We’re talking several inches difference. Btw, I also purchased a new front bumper from LMC and it fits perfectly. Just trying to make sure someone hasn’t done some sort of frame swap in the past.
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: May 2015 Posts: 11,038 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,038 | The C10 frame should be 42" wide at the frame, but the K10 (4WD) frame is 34" wide at the rear. Front widths are the same for C10 and K10. The vehicle info kit doesn't say there's a difference between stepside and fleetside.
Could be that they share the same bumper, but need different brackets (maybe you got ones for a K10?)
Yep different brackets. GMK4143807672S '62 C10 rear bumper brackets. GMK414180755S '62 K10 rear bumper brackets.
Last edited by klhansen; 10/12/2022 10:43 PM. Reason: dug up bracket part numbers
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | Brackets are correct unless miss packed at the manufacturer. I also have a set of fleetside brackets they also won’t fit the bumper. I think I have a bit of fabricating in my future.
My frame is 42” outside to outside. I may have a improperly drilled bumper or miss boxed. Thanks
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: May 2015 Posts: 11,038 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,038 | Looking at the brackets I found, C10's are stamped steel, and K10's are bent flat steel per the pictures on Summit's site.
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | The brackets sent for C-10 are bent flat steel with compound bends. I have stamped steel on the front but the single bracket I removed from the rear was bent flat steel. I think LMC sent the wrong rear bumper. Visually it looks right but the holes are way off.
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: May 2015 Posts: 11,038 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,038 | The rear bumpers for C-10 and K-10 have the same part number on summit's site.
Definitely something is wrong.
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: Oct 2021 Posts: 6,761 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,761 | FWIW I received a mis-drilled front bumper for a '77 F-100. They were aware of the problem when I called and didn't even want the first one back. Sent out a correctly drilled bumper right away.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | Thanks, I will give LMC’s customer service a chance.
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
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