Re: B.B. ID'ing
Extra ring means longer piston, hence the reason for being of a tall block. I wouldn't call it "junk", though. It is an engine designed to withstand hard duty usage.
It seems like an excellent choice for a work truck or tow rig.
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1971 GMC C2500 Custom Camper - Second Owner.
350/TH350, Dana 60 Rear.
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