I picked up a so called rebuilt 327 about 4 years ago pretty cheap. The guy said it was rebuilt about 5 years before. I think it was much more than that. It was one of a pair he got with a boat. The boat was determined not salvageable. The engine was much later than the boat so I think they replaced the short blocks. I just tore into it check it out. The heads (1.72 intakes nothing special) look to be rebuilt. I have a set of Edelbrock heads that’ll go on. I found the engine is bored .060 over and has a slight ridge on several cylinders so not recently rebuilt. I’ll check the bearing clearances. Has a new double roller timing chain. The lifters don’t seam to have wear, do these look new? Do new lifters have slight across the whole face?
Lifters are ground on something like a 60” radius, they will be convex. You can check them by putting two together or using a good straight edge, and be sure to keep them on the lobe you removed them from.
Did you make sure the engine you got doesn't run backwards? A lot of time's a twin engine boat will have one that runs in the other direction.
It’s is the correct rotation it’s the first thing I checked. It’s actually a 67 657 block ME code which is a 67 Camaro 250 hp. Steel small journal crank. Water passages are really clean, I don’t think it was actually used in a boat they were swapping the short block in. Had a cast iron oil pan that weighs about 50 lbs. If the lifters look to be new and not used I thought of just pulling the marine cam and swap in something like the Summit 1103 cam
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