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If you are unsure on compatibility
Spins nice and smoothly like it should
0L V8 305 / 5
Bent / Slighly warped to some degree
3L V6 Stringer & Cobra (Rod was straighter) was P/N GM 3998966 / OMC 909422 / 0909422
Chevy GM Steel Valve Rocker Covers Older BBC 454 502 1980s 7.4L 8.2L MerCruiser? Internal Engine Parts If you are unsure onItem Details UNKNOWN Chevy GM BBC 454 7. 4L 502 8. 2L V8 Valve covers possibly 370 400 440? I'm not sure if came off a MerCruiser engine or was something that was originally in a car as I don't see a MerCruiser identification sticker with a serial number. The black paint throws me off, so it might have been from something earlier like an early 80's TRS. These were mixed in with other valve covers I had, so it might have been an automotive application,