5 quick operation and Maintenance Qs

I'll second the importance of doing a compression rest. Blowing oil could be a stuck pcv valve, but it could also be bad rings which would mean a full rebuild. (I just went through this on mine)

Change the oil. Get a wix filter. I believe part 51515 but someone correct me if im wrong.

Since you have electronic ignition make sure your spark plugs are gapped to .045

My radiator was doing the same thing. I installed a new spectra one (a 22" a/c one) at the same time as the engine swap and it runs way cool now. No fan shroud or fancy electric fan necessary.