cummins

I'm swapping a cummins into a 1988 GMC 1 ton crew cab dually. Im also converting it to single rear wheel. However i'm already halfway through this project so Ill help get you caught up. I had my eye on a old gmc that belonged to a rancher friend of mine. I asked if he would consider selling it...

Friend of mine scanned these in a while back, and I am providing them here for future search reference. :D These are factory spec sheets. Note the cool clutch engagement torques.

I am thinking of getting an exhaust put on the Dodge and I have some questions for some of you that have done it. I don't live where they have smog checks, but someday they might put it into enforcement because we are growing so quickly. What are the legal issues of going without a catalytic...