It's been a while since I updated this post. Been making steady progress over the last several weeks and the list of to do's will keep my occupied for the rest of the winter I suspect.
I decided to give the engine block a new coat of paint and while prepping it I noticed some things that I needed to investigate. I remembered Dad had noted that after he had the intake manifold powdercoated there was an abundance of blasting media inside the manifold that was tough to get out. I noticed more of it in the intake plenum after I removed the throttle body and decided to remove the intake to look further into it. I found signs of media in almost all intake runners and when I removed the rear vacuum port plug on the intake I found gobs of media/sand.
I know Dad had spent hours flushing that intake when he got it home so I wasn't confident that more flushing would ever get all of it out. I also knew that Dad had only run this engine for about 20 minutes so I figured there shouldn't be much damage internally but I decided to pop the oil pan off and look at the rear main bearing (closest to oil pump) for damage. Thankfully it looked perfect.
At this point I mapped out a scope of work for the engine and ordered up a rear main seal, pan and intake gaskets (updated GM intake gasket 89017539), injector o-rings and I also called a friend of mine who has a few 8.1's and he gave me one of his intakes. I also ordered a new A/C pump bracket the locates A/C pump to top of driver side but still has provisions for std power steering pump, not the larger Kodiak chassis pump (I noticed this bracket while looking at the 8.1 in my Winnebago).
I cleaned up the block and parts and put a new coat of paint on block, pan and intake and then assembled.
