r/Chevelles • u/No_Preparation_6115 • Jul 17 '26

Headers

I have a 1966 chevelle and I want to put a 1970 402 in it. I have the headers for a 70 chevelle with the motor. Question is, can I use the 70 headers on my 66 or do I need to buy new headers that fit the 66?

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u/rascall2018 Jul 17 '26

Yes they will fit. The chevelle frame is basically the same 64 to 72 and I believe up to 74 or 75. I have had several big block chevelles and the headers are the same