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I have a couple 67 273 4-bbl engines apart and they are definitely forged and heavy! I also have a set of replacement forged pistons .030 over and they are real heavy!



Are you sure you don't have the L2222 TRW Forged pistons. Every HP 273 I've torn apart had the 10.5 cast piston. Also, there is a secret to lightening the HP piston. Also as a note: EGGE shows a 4 barrel piston with the L2222 part number. However, after calling them I find that the piston they offer is the cast replacement piston. Really hard to find forged pistons for the 273 without going with the major manufacturers since their pistons are custom made and run around $600-$800 a set.