i might have found a donor truck for a couple parts i need for my Cummins swap its a 85 3/4 ton cab & chassis its non diesel. buts its got the a good cab and front fenders that i need he wants 500 for the thing. My only questions is what is the difference between the cab/chassis and my 91.5 is the dash different from my 91.5 to the 85 and is there a length difference from and 8ft bed. and is there any thing else i need to know before i call on it on the weekend

thanks Shane

 

Most parts as interchangeable from 1980 to 1993, only small differences in trim and wiring over the years. Almost all mechanical, and body parts are the same. Only thought I have is there might be a slight difference in a couple of the box mounts, but nothing to outrageous.

The dash frames them selves will interchange, but your diesel wiring is it's own animal and should be retained in the original 91 truck.

$500 sounds like a good deal for all the body parts your looking for...I say go get it!

 

The floor will be different if they are both automatic trans. I put an 86 cab on mine, and found the floor had to be massaged a bit with a hammer to clear the O/D section of the trans. There were more than one length of cab chassis trucks. Are you planning on using the frame?

 

Some cab/chassic have a different wheel base than a standard truck. Which that may only made a difference in some of the drive train parts.

 

i was planning on just pulling the motor out of the cummins buying a 4x4 trans and transfer then just going with that for now the truck currently has a 318 4 speed 4x4 its a regular cab calling to day to get some more info

 

I think the 4x4 and 4x2 cabs are different. It could be dealt with though, if you're into sheet metal work.