Bucit
New Member
- Mar 12, 2010
- 3,144
- Boat Info
- 2005 280 Sundancer
2004 SPD-104 Achilles w/ 8hp Yamaha
- Engines
- Twin 4.3 MPI's with Alpha drives.
Can you use an automotive GM head in a marine engine? What are the differences between the two?
4.3l MPI Heads
- Thread starter Bucit
- Start date
scoflaw
Well-Known Member
- Aug 10, 2011
- 6,395
- Boat Info
- 1999 Powerquest legend 260 sx 502 mag
2005 Baja 242 islander 496
- Engines
- 502 mpi Bravo 1
496 mag B1
No doubt, pull a valve cover and research the casting # on the head, merc may or may not have used SS valves. They are plain ole GM cast iron heads. CC's may have changed over the 4.3 years. Do a little homework on the casting #
themikehyde
New Member
I have a brand new set of gaskets I could make you a deal on!
