I just got an '85 C30 with 6.2 diesel. The motor is out of a different truck and only god knows how many miles are on this thing. The truck starts up easily with very little black smoke. I want to pull the 6.2 out for my '90 Suburban and here's what I want to know: What should I do to the motor before I do the swap? I was planning on changing the head gasket, swap the timing chain for gears and I already have new glow plugs from Kennedy diesel. Is there anything else that I should do? I do have a new banks turbo kit, but that's gonna have to wait as I'd like to take care of the rust before it's too late.