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Thanks for the replies! If mine does not have the hp stamp, Is it certain that is isn't the high performance 383 or is there any other way to tell for sure? Thanks

I have a 1970 383 shortblock and am trying to identify if its an hp or not, it doesn't have an hp or hp2 stamp by the boss next to the distributor, I read that hp and hp2 are not always stamped onto the block-is this true? I need confirmation on exactly what I have-I was told that the engine...