How to identify head codes?
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How to identify head codes?
I recently bought an LS head from a guy but there was a different code on the right hand side when looking towards the exh manifold. It reads P75-4 but on my 94 LS head it reads PR4-4 and on my friends 92-93 LS it reads PR4-2. Can anyone tell me what it stands for an which year the P75-4 is? Thank you.
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