Click on image for the lowdown. 
====
| | | Forums66 Topics128,050 Posts1,055,672 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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Dec 2007 Posts: 13 Apprentice | | Apprentice Joined: Dec 2007 Posts: 13 | Hello, new to Stovebolt, must say all the info on here is amazing! I have a '66 Chevy short wheelbase that is actually a '66 cab on a '63 frame. Guess I have a few question, one is the '63 frame the same dimensions as the '64-66's? It appears they are the same from looking at the Mar-K website, all the part no's are the same Didn't have a bed and just purchased a short fleet bed for it that is supposed to be from a '64-66, but only one cross sill lines up with the mounting holes on the frame. It is the second set of brackets back from the cab, all the other sill holes are too wide to line up with the frame. is the bed only supposed to bolt to the frame at the second sill back and the rear sill, or do I have the wrong sills? Is the '60-62 frame wider than the '64-66 frame? I can take pics if my rambling is not clear. Thanks for any help you can provide, Joe
Last edited by Joe R.; 12/24/2007 11:20 PM.
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | welcome to the garage Joe, THE place to sort it all out
if the 63 frame had a step bed originally, the mounting holes on the frame for a fleet bed could well be different - the step beds are the same 55-66, and fleet beds fit the same frames, making the 60-66 fleets interchangeable ... don't quote me, but I believe the fleets all have at least 6 frame mount bolts, the longer ones 8, and there should be 'pads' on the bottom of the cross sills where they sit on the frame, the spacing [width] on those shouldn't be any different 60-66 ... sure your looking at the right holes?
pictures would definitely help some of the 60-66 experts see what yer up against
Bill | | | | | Joined: Dec 2007 Posts: 13 Apprentice | | Apprentice Joined: Dec 2007 Posts: 13 | Thanks for the welcome red58! here are pics with the sills in the approximate places where they should live, Linky of the sills as you can see none of them line up, I was wrong about the second one back it doesn't line up either. Everything I'm seeing says the 60-62 frames are different than the 63-66, bed wood and sill part numbers are different between the two. It would be helpful if some one would be kind enough to give me dimensions on the frame mounting holes on a 60-62 frame and maybe pics. I hope I can just buy the '63 sills and all will be good, is it possible I might have to replace the front mounts that are riveted to the frame? Thanks, joe | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | Joe - I can't see those sills being correct, there can't be that much difference in frame width - my first thought was they're 67-72 sills, but the guy to check with is Tony "4-5-6trucks", who has a lot of info about the 60's trucks [see the bottom of that page!] ... haven't noticed him around in awhile, but you could email him if someone else doesn't chime in here shortly Bill | | | | | Joined: Dec 2007 Posts: 13 Apprentice | | Apprentice Joined: Dec 2007 Posts: 13 | Thanks Bill. we just sat the bed on the truck mostly to store it and do some sanding/body work. and even the rear sill mount holes, under the tailgate where it sits on the frame, are enough to wide that they miss the frame. I am pretty sure it is a bed off of a 60-62 | | | | | Joined: Dec 2005 Posts: 406 Shop Shark | | Shop Shark Joined: Dec 2005 Posts: 406 | Measure the rear cross sill mounting spacing. If it is 39-5/8" wide, then the bed is a 60-62. If it is, then you will need to buy new cross sills and rear cross sill to fit a 63-66 frame. The 63-66 spacing is 7-15/16" narrower (or 31-3/4" at the rear cross sill). And, by the way, I noticed you are in Norman, OK. We make the parts you need right here in Oklahoma City! See our website www.mar-k.com | | | | | Joined: Dec 2007 Posts: 13 Apprentice | | Apprentice Joined: Dec 2007 Posts: 13 | Thank you much, That is a big help! I am familiar with you guys, will definitely be buying some stuff from you guys soon as I recover from X-mas! | | |
| |