I just picked up a 93 GMC 3500HD and I plan on doing several mods to the 6.5 to improve the reliability and efficiency. One of the first things will be the exhaust.

I was curious if the kits for regular 3500s will fit my HD since it is a solid front axle instead of IFS. I have heard the HDs are actually a 4500 chassis, so I want to make sure before I buy a kit.

Any help would be appreciated.

the 3500hd has a taller frame and the front frame horns drop way down in the front for the spring hanger and has the eaton rear, it uses a regular cab and almost all parts are interchangeable, i took a 93 c3500hd 6.5/4l80e dump truck that got swapped to a 454/4l80e and put the exhaust from a reg cab k3500 454/th400 and it all bolted right on so i would say the diesel exhaust would have the same result.

You might have to modify some of the hangers, but pipe wise it should all be the same.

It is a challenge to find an exhaust for our dually's. It took me at least 11 hrs of research to find one and i actually found a good one, it is called a diamond eye exhaust its a turbo back system, deletes the cat, it runs about $289 i don't know what shipping would be but i will tell you later today I am calling diamond eye today.

It is a challenge to find an exhaust for our dually's. It took me at least 11 hrs of research to find one and i actually found a good one, it is called a diamond eye exhaust its a turbo back system, deletes the cat, it runs about $289 i don't know what shipping would be but i will tell you later today I am calling diamond eye today.

He's talking about the C3500HD. You're talking about a normal C/K3500.

I'm going to have to agree with Matt that the pipes are probably all the same and if anything needs modded, it's probably going to be hangers.

Moved to Fuel System, Air, Exhaust, & Emissions Upgrades...