Chevy GM Steel Valve Rocker Covers Older BBC 454 502 1980s 7.4L 8.2L MerCruiser? Waterski Tow Hooks & Pylons 0L 305CID 350CID 190hp 198hp

0L 305CID 350CID 190hp 198hp 200hp 225hp 228hp 230hp 250hp 260hp 270hp 280hp 300 MerCruiser Alpha One 200hp 78779 TRS MIE Chevy GM 3704817 3719599

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

Comes with the three pictured

120hp GM 153 I/L4 1979-1982 5192049 THRU 6229717

Chevy GM Steel Valve Rocker Covers Older BBC 454 502 1980s 7.4L 8.2L MerCruiser? Waterski Tow Hooks & Pylons 0L 305CID 350CID 190hp 198hpItem 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,