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308 Posts
I changed the head on my 327 about 10 years back and I just found out that the heads I replaced them with are from a 71-72 350 engine. My questions is what is the recommended spark plug I should be running in these heads. The old heads took a R45TS or R44TS if I remember correctly.
67 Camaro rs
327/TH350/3.73 8.5" 10 bolt
67 Camaro rs
327/TH350/3.73 8.5" 10 bolt