78 k20 dually bed swap

[roundhouse]

Looks funny with the 3/4 ton wheels in front and dual in back
But it should swap over
Measure the wheelbase of both trucks carefully and take a good look at the frame
Some cab and chassis trucks had a flat frame at the back


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[Jason S]

Check the overall width of your duals (outer wheel to outer wheel) versus the overall width of the duals on the truck with the dually bed.

If I remember correctly,
With duals swapped onto a single wheel 14-bolt rear end (C/K-20 rear axle), the total width (outer wheel to outer wheel) will be narrower than duals on a dual wheel 14-bolt (C/K-30 dually).   

I'm thinking that the dually bed will physically swap fine, but the outer dual on your truck will be set back within the dually fender...

[thunderwood78]

I was able to track down the original owner of the truck. It was a standard k20 lwb. He was the one who built the flatbed. Someone afterwards did the dually conversion.

[LTZ C20]

I was able to track down the original owner of the truck. It was a standard k20 lwb. He was the one who built the flatbed. Someone afterwards did the dually conversion.

Ahhh and that's the ticket right there.

[Irish_Alley]

so.... are the front wheels bud wheels?
if you look at the back of the rear brake drums is there a lot of room to put a socket and ratchet on the brake bleeder? if theres very little room then this would indicate a cab and chassis rear if theres more than enough room then it would be a dually rear. if you have regular wheels upfront the inside tires should like up if its a dually rear if its a cab and chassis rear the outside tires should line up. take some pictures and we can help tell a story about the truck