Is the flywheel on a late model 350 chevy the same for marine Application?

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I am putting a automotive 350 in my boat

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  • The flywheel is the same, but often heavier in marine applications. Ive seen sealed and non-sealed starters so thats up to you. Also, your water pump will not work (or not very long) in marine applications, you’ll need to switch that as well. Next…is this going to be a saltwater boat. If your answer is yes, you’re going to have massive headaches. Here are the reasons.

    1. Marine heads are different. Often the valves are made of a non-corrosive material and other corrosive parts are different such as head bolts. Your heads will rot quickly.
    2. you will need marine headers or you may have a boat fire, or overheating issues.
    3. In general, you may have problems with anything that is aluminum or steel, internal or external.

    Marine engines are sold because they are very different than regular car engines.
    – Chosen by Asker

  • starter and flywheel is the same,i do think marine the head gasket are different

  • In most cases the 5.7L GM block accommodates either a torque converter or a flywheel designed for a clutch plates. These don’t accommodate all marine couplings. So you need to know what drive/I/O method you will be using.

    Marine starters are sealed to prevent spark/ignition sources in the bilge. Gas fueled engines and fuel fumes are highly explosive and the idea is to not have sparks in the bilge.

    Same is true of the alternator.

    Are you fuel injected?

    Marine 5.7 blocks have many differences. You need to consult with someone who knows what’s needed. Yes the gasket(s) are different. The oil pan can be different. The Cam shaft. Crankshaft in some-cases is forged. …….pistons, valves? Even the heads themselves.

  • Agree with Steve. Marine applications are different. Do not do this. There is a reason they use marine specific parts, and it’s not so they can charge boat owners more money.

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