Hello everyone... while searching for information on this series of engines, this forum came up... and I've read almost everything here...Thanks for the info. Some of you may not know this, but Chris Craft used the lincoln 430 for quite a few models, both open boats, like the super sport at 18 to21 feet, and also some of the larger boats, up to 47 feet. After reading a bunch about this engine, it's easy to understand why it would be a good marine engine... the ability to withstand heavy loading, and the heavy construction.
I have a 36 foot chris craft cruiser, with twin 283's and I just bought a 1965 Chris Craft supersport 21 foot, with a 430 in it. The motor runs great, nice and quiet, lots of power. The boat is coming into my shop for a restoration, including new upholstery and a complete refinish. While the engine is good, I am doing my regular due diligence and starting to assemble a)knowledge of this particular engine b) spare parts, because it's old and c) where the hell to find things because that's smart. I have also been a car guy, but I find I can't afford to do old cars and old boats at the same time
I am thinking of finding a later model block and getting started on assembling a motor for eventual swap... with some perfomance changes of course

I think a 430 with big slugs, the edelbrock setup, a roller cam and some careful balancing and assembly would make a cool boat. With the stock lincoln, which in the marine version in 1965 was rated at 275 horse, (which I think is likely underrated) the 21 foot supersport was spec'd at 47 mph. That was fairly quick in 65 on the water. I will mention that this is a numbers boat, the original engine is all there.
MEL Marine division... and if you thought MEL car parts were scarce....