K30 Downgrade to Cummins Project

[Vintage Windmills]

This is about a 1986 K30 crew cab that I bought out in Seattle. I have not personally seen the truck yet. I did thorough recon though I bought since I think its probably the simplest way to get a cummins powered 4x4 chevy. This truck is rust free or close to. I am going to plan this awhile and not do any wrenching on the truck until its ready to go, unless I just replace the trans for now.

Plan was to pull the engine and put in a Cummins. I think I will do that for efficiency, even if its a step down in power It will be unless I turn up the cummins. After I agreed to purchase, he provided Dyno sheets proving it has 575 ft lbs and 475 HP. The trans is blown, can you believe it?? The debate I'm having with myself is if I should go fuel injection and overdrive and keep the 502. I think the fact that the BBC is built for 91+ octane will be the determining factor to go with the 1990 6BT/G360/NP205 in the shed I'm tripping over.

Pics and description of purchase procedure to follow. It was quite a process to buy it and get it lined up for shipping