Re: frame numbers
 

C10 SWB will always be a Chevrolet. The GMCs are -not- mentioned as a "C" anything.

Cab is the same, long bed or short bed.

Now here is my problem.
1534 is -not- a normal designation for a Chevrolet.
First off, 10, 20, 30 are the numbers for Chevrolet trucks while 10, 15, 25 are the equivalent GMC numbers. -Except for Canada-
-edit-
In the US apparently 144 is the designation for a 1/2 ton short bed. 154 is the designation for a 1/2ton long bed.
US 1964 VIN should look something like 4C144F100001 for a 1/2ton shortbed.
Canada 1964 VIN should look something like 4C1434600001A for a 1/2 ton shortbed.
-end edit-

A Chevrolet 1534 truck *could* be from Canada... but that would be a longbed truck.

Could you post the VIN? I have spent a bit of time working with the VINs.

Re: frame numbers
 

Thanks for all the replies. When I pointed out the incorrect(for Chevy) leaf springs and informed the seller it must be a GMC frame he responded with, "Oh, that might be why it had a GMC tailgate" So, I'm assuming that for whatever reason, the original Chevy longbox cab, 283 V8 and SM420 were transplanted into a 1963-66 GMC short box chassis with GMC box and now has a Chevy tailgate. It is quite a quilt as it also has 'custom' emblems on the cab but nothing custom inside. As to a full conversion, it will be infinitely easier and cheaper to find a correct Chevy chassis and custom trimmings rather than finding a rust free GMC cab, hood and 305 V6. So, unless someone wants to do a free 'organ donation' I'm afraid it might eventually be 100% Chevy. When the swirling vortex of terror outside subsides I'll get some pics posted. BTW, that's me on the right and my brother on the left.
Brian

Re: frame numbers
 

David, I see you posted while I was typing. The VIN checks out perfectly as a Chevy 1/2 ton, 127" wb IE:

4C154H164906

4=1964
C=Conventional Cab
1=1/2 ton
5=127" wb
4=pickup
H=Fremont, Cal.
164906=64906th production (#'s start at 100,001 each year at each plant)

The VIN does not indicate the style of bed as stepside or fleetside. Don't confuse VIN # with model #, they don't correlate.

The 1964 brochure shows the four C10 Model's as:
Model C1404 is the 1/2 ton short bed, stepside.
Model C1434 is the 1/2 ton short bed, fleetside.
Model C1504 is the 1/2 ton long bed, stepside.
Model C1534 is the 1/2 ton long bed, fleetside.

Brian

Re: frame numbers
 

Sorry Mr. Shaffer, my statement should have been more year specific.

Build it the way that is most affordable and suits you! I bought a '64 in the fall of 2012 that was supposed to be a GMC and ended up being a Chevy. Was cheap enough where I got a lot of good parts and was still able to sell what was left and break even. Your truck looks like a good driver as-is!

The "swirling vortex of terror" subsided here last night and it is supposed to be above freezing tomorrow so that warmer weather should be coming your way too!

DAC

Re: frame numbers
 

I don't confuse the VIN with model number...

But, you mentioned it being a C1534, which is the designation for the fleetside longbed in Canada. Haven't seen that designation for the American trucks (because those numbers -are- in the Canadian VIN and do designate the fleetside/stepside.)

You have mentioned, again, the longbed cab (implying there is also a shortbed cab) but there is only one cab. Same on the 1/2-3/4-1 tons and appearances indicate even the bigger trucks the basic cab is the same (with fender extensions, running boards, etc). I say appearances since I haven't really taken the time to measure the 4000 I have versus the 2500... but the doors are interchangeable between them, the seat is interchangeable, the dash is interchangeable... so the cab is also likely interchangeable (meaning it is the same cab).

Re: frame numbers
 

David,
I only use the term "longbed cab" simply to denote the fact it is from a 15 series 127" truck originally.
I don't know what else I can say about the model numbers. My U.S. sales brochures from 1960-1966 all use the same #'s and the original dealer documents show it as a Model C1534.