longbox stepsides - The 1947 - Present Chevrolet & GMC Truck Message Board Network

pimperout · 10-19-2006, 07:00 PM

i was just thinking about mabe buying an old long stepside from a friend of mine but im not sure about which vehicle its off of so i was just wondering if long stepside boxs will work on a 70 GMC 1500 from a 55-66 year truck, if any of these boxs will work what are the differences in them, they dont look all that different from what i have seen, thanks

sameyrasmea72 · 10-19-2006, 07:08 PM

other than the fenders, they are very close.

pimperout · 10-19-2006, 09:19 PM

ok thanks

sameyrasmea72 · 10-20-2006, 12:37 AM

Before you make a decision let someone on the board explain the difference a little closer. I know the bed will work, but there are a few difference that someone can explain to you.

The same step beds were used untill '87.

pimperout · 10-20-2006, 01:57 AM

alrite thanks fer the tips

MAR-Ktech · 10-20-2006, 01:40 PM

There are many subtle differences that keep this from being a simple bolt-on conversion, even though the beds all look about the same. The 55-66 year series included four distinctly different beds and the problems are different depending on which one you want to use. http://www.mar-k.com/bed_side_interchange_gm.html will give you some idea of the differences and help you decide if you want to do the swap. The differences include rear sill, rear sill mounting positions, cross sills, angle strips holes, front panel bed strip holes, bed wood and bed-to-frame bolts locations. These in addition to the obvious fender and its bolt pattern. The parts needed to make the change easier are available from most vendors. Good luck on your project.

Mar-Ktech

The link above specifically applies to short beds but many of the problems you may have are the same for long beds.

pimperout · 10-21-2006, 04:28 PM

YES!! thank you very much thats exactly what i was looking for thank you

10-19-2006, 07:00 PM	#1
pimperout Registered User Join Date: Sep 2006 Location: Bow Island, AB, Canada Posts: 166	longbox stepsides i was just thinking about mabe buying an old long stepside from a friend of mine but im not sure about which vehicle its off of so i was just wondering if long stepside boxs will work on a 70 GMC 1500 from a 55-66 year truck, if any of these boxs will work what are the differences in them, they dont look all that different from what i have seen, thanks

10-19-2006, 07:08 PM	#2
sameyrasmea72 Senior Member Join Date: Aug 2003 Location: Lubbock, Texas Posts: 2,443	Re: longbox stepsides other than the fenders, they are very close. __________________ 72 Cheyenne Super 80 Silverado Blazer 2wd

10-19-2006, 09:19 PM	#3
pimperout Registered User Join Date: Sep 2006 Location: Bow Island, AB, Canada Posts: 166	Re: longbox stepsides ok thanks

10-20-2006, 12:37 AM	#4
sameyrasmea72 Senior Member Join Date: Aug 2003 Location: Lubbock, Texas Posts: 2,443	Re: longbox stepsides Before you make a decision let someone on the board explain the difference a little closer. I know the bed will work, but there are a few difference that someone can explain to you. The same step beds were used untill '87. __________________ 72 Cheyenne Super 80 Silverado Blazer 2wd Last edited by sameyrasmea72; 10-20-2006 at 12:39 AM.

10-20-2006, 01:57 AM	#5
pimperout Registered User Join Date: Sep 2006 Location: Bow Island, AB, Canada Posts: 166	Re: longbox stepsides alrite thanks fer the tips

10-20-2006, 01:40 PM	#6
MAR-Ktech Truck Parts Mfg. Join Date: Jul 2005 Location: Oklahoma City, OK Posts: 697	Re: longbox stepsides There are many subtle differences that keep this from being a simple bolt-on conversion, even though the beds all look about the same. The 55-66 year series included four distinctly different beds and the problems are different depending on which one you want to use. http://www.mar-k.com/bed_side_interchange_gm.html will give you some idea of the differences and help you decide if you want to do the swap. The differences include rear sill, rear sill mounting positions, cross sills, angle strips holes, front panel bed strip holes, bed wood and bed-to-frame bolts locations. These in addition to the obvious fender and its bolt pattern. The parts needed to make the change easier are available from most vendors. Good luck on your project. Mar-Ktech The link above specifically applies to short beds but many of the problems you may have are the same for long beds. __________________ GET MAR-K Quality! Restoration and Custom Pickup Parts for Chevy, GMC, Ford, Dodge and Custom Trucks Last edited by MAR-Ktech; 10-20-2006 at 01:44 PM. Reason: Clarify the link application to this truck

10-21-2006, 04:28 PM	#7
pimperout Registered User Join Date: Sep 2006 Location: Bow Island, AB, Canada Posts: 166	Re: longbox stepsides YES!! thank you very much thats exactly what i was looking for thank you



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