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Our second clue to the engine’s past life was the yellow machine-shop markings on the front main cap (arrow). That, the Fel-Pro gaskets, and the fact that the oil pump pickup tube was tack-welded to the pump told us it had probably been rebuilt in a decent local shop. The rods were all mismarked with cylinder stampings, but side clearance seemed good. The timing chain was a double-roller and in just-installed condition--including a cam gear installed with two Taiwan Grade 5 bolts with no thread locker on ’em.