Welp, the 350 motor in my boat let go the other day. I pulled it out today and tore it apart. Camshaft came out in 2 piece, and a few rods are fuzzed to the crank. So now its time for a new motor. I have a few questions first. I am goin to do a 6L ls style motor in my boat. I wanna know do normal boat motors have an external water pump to pump the water to the water pump on the motor? Like the lower unit pump???? Secondly, does the water that flows through the exhaust go actually in the exhaust or chambers surrounding the exhaust. Basically I gotta take some stock 6L manifold, turn the upside down and switch sides. I wanna run water through them somehow and keep the water out of the motor. Also what kind of cam selection do I need to look for?
Any help is appreciated.