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43 2pc Rear main seal

zebedee

New member
"I posted back in the fall bec

"I posted back in the fall because I had a bad Knock in my engine. I stripped it down to the block and the only suspect was a flattened bearing toward the front of my block. a couple years before my dad had given me this boat, he put an engine in it out of a mini-van from the junk yard.
Do you guys think I should re-build this one (with the help of knowledgable friends/dad)? Or just buy a Re-manufactured block...and if so, who has a good reputation?"
 
4.3 with 2 piece rear seal is

4.3 with 2 piece rear seal is fairly rare. Only made a couple of years. Top end is the same as late 80s to early 90s models. Big thing to watch out for if changing to 1 piece rear seal is flywheel is different and coupler that mounts with flywheel bolts will not work on 1 piece seal engine.
 
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