To rebuild or not rebuild, that's the question!

[markjohnson]

Upon re-reading this thread the "215-270HP truck motor" comment almost comes across as insulting. General Motors saw fit to produce and stamp these '72 produced engines as 1970 LS6 CRR emgines and that's what they are and always be. It is a real LS6. Tirebirds' is a real LS6. I'd like for someone to show me a truck motor that comes with rectangular port heads and a solid lifter camshaft. Alan Colvin has even looked into these several years ago and could not explain the engine suffix. If anything, it's much more rare than the common #512 1970 block.