I've got '93 3/4 ton Chev. pickup with the 6.5 L turbodiesel and about 212 thousand miles on it. Still runs real well and very little oil usage, but she's long in the tooth and it's my everyday driver. I've got a 6.2 L diesel that is also high mileage but ran good when I pulled it out of my son's '85 pickup that was wrecked. I'd like to overhaul it over a period of time and put it in the '93, along with the turbo from the 6.5. Was wondering if anyone knew how GM got the 6.2 block to 6.5? Was it bore or stroke? I can't seem to find the specs. on the internet anywhere. I'd like to bore it to 6.5 if that's how the increase was accomplished or maybe find a used 6.5 crank that could be turned if it was a stroke deal. I know the heads are different. I believe the 6.2 was 21:1 c.r., and the 6.5 is 19:1 c.r. If anyone has done something like this, I'd sure like to hear of it.
Thanks, Garrett Fulton