Bought a 1983 Viking deck boat last year with a 5.0l that had not been winterized and so the motor was completely trashed. I bought a 5.7l from Rapido marine and ran the boa the rest of the summer with no issues. I would like to replace the intake manifold and move to a 4bb carb/w electric choke this year but am not sure if I should be looking for a specific casting number for the intake or if any older 4bb intake will work. Getting a carb is pretty straighforward but I don't want to make a mistake about the intake manifold. Any advice on what I should be looking for? I've located an older manifold but am not sure if I should be worried about casting numbers or not. Thanks.
