Has anyone replaced these exhaust manifolds with an aftermarket; the ones currently on boat are not available; getting hot on one side; research says they can be replaced with any 454 manifold; may have to change up exhaust connections to work; thanks
Thanks; I bought a case of Shaffers Oil; 10w-30; buddy had Scott White build some custom engines for his performance boat and recommended this stuff; supposed to be high quality oil; should be for $10 a quart…