Chevy GM Steel Valve Rocker Covers Older BBC 454 502 1980s 7.4L 8.2L MerCruiser? Waterski Tow Hooks & Pylons 75" shaft diameter

75" shaft diameter

**As this is a quantity item

774-8600A 3

Replaced by 854615

My guess this is mid 80's but I can't find a specific reference from the manual on this particular flame arrestor

Chevy GM Steel Valve Rocker Covers Older BBC 454 502 1980s 7.4L 8.2L MerCruiser? Waterski Tow Hooks & Pylons 75" shaft diameterItem 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,