Chevy GM Steel Valve Rocker Covers Older BBC 454 502 1980s 7.4L 8.2L MerCruiser? Fuel Lines & Filters but they are sometimes hard

but they are sometimes hard to remove when they are made of brass

also note the hex distributor shaft that goes into the oil pump

387929 / 0387929 Body Assembly (Stamped 32292)

7L 200hp 230hp 260hp 305 350 120hp

Chevy GM Steel Valve Rocker Covers Older BBC 454 502 1980s 7.4L 8.2L MerCruiser? Fuel Lines & Filters but they are sometimes hardItem 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,