[tirebird]

James,..this subject, the stamping on my engine, has been discussed before on this site with no clear resolution. All I do know, according to several articles written by the 2nd owner(original owner was B F Goodrich) in various hot rod publications, is that Berger Chevrolet sold him this engine in 1972 as a warranty replacement LS6. There's still some disagreement about whether it should have been labeled that way but all the arguments are immaterial at this time. That's the engine in my car with those stampings(block and head),.and I love driving it. I'm not a collector so I'm not worried about "flipping" the car for more money. However, I do want to keep it as original as possible unless it needs to be rebuilt, and that's why I'm asking the gearheads on this board for their opinion about rebuilding the block.