Hi All

New to this forum I have a question straight away. :-) I'm about to have a look at an claimed 454 LS7 crate engine from -71 that has been used in a speedboat. It has been used very little and not been sitting in water so the cooling channels should be ok. I have some questions that I hope you guys could help me out with.
Does someone know which casting numbers that was used (heads and engine) those years?
What numbers were stamped onto these engine blocks?
Could someone verify that there only were one version of these engines sold as crates and not a special 454 LS7 that only were ment for boat racing. I would be great if someone could verify this since I hope to fit and run this engine into my El Camino.

Thanks in advance
JR