1982 scottsdale box to 1976 sierra grande

[kmswi]

Can anyone tell me if the box from the 82 will fit on the 76? It looks like the mounting holes are in different locations,

[tucsonjwt]

I don't know about that, but I took a box from a 79 C10 and mounted it to my 73 C20 and the last two bolts did not line up. The bolt holes in the frame were in a different location and my bolts were longer, as I recall. I did the swap at a local junkyard who lifted off the old bed with a forklift and straps, then lifted the new bed in place. Since the junkyard assured me that the bolts holes were the same, they quickly got out a heavy drill and drilled new holes in the frame to accommodate the new bed. I reused the old bolts.

So, I think 1/2 ton and 3/4 ton beds have a different bolt pattern. I don't know about 73-80 and 81-87 differences.

[cadillac_al]

I put an 81 or 82 box on my 76 and it bolted right up except I had to relocate the gas tank to the other side.

[CSHADES]

I put a 82 box on my 77 everything lined up, except the one box bolt from the 82 went through both the top and bottom of the frame(I used the 82 bolts)

[KrazyRay]

There is one bed that has an oddball bolt pattern. I believe it was an 81 or 82. I ran into that problem when putting it on an 85 truck. All bolts will work except the 2nd ones from the front of the bed.