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Old 06-12-2007, 07:49 AM
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Marine Flywheel (454)

I have a chance to pick up a flywheel for an externally balanced 454 for short money. The guy selling it says it is from a marine application, but that it will work in a car. He says the boat used a coupeler that bolted in place of the pressure plate, and that it should be fine for an automotive application. Anyone familiar with boat flywheels?

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Old 06-12-2007, 08:28 PM
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Have used and sold many.. They will work on an auto/truck application if--

IF the flywheel is from a reverse rotation Marine app. You will need to remove the ring gear and put it back on the correct side..

If the wheel was used with a coupler. You will need to have the clutch surface area refaced at a machine shop as the surface is only rough turned in Marine app.

The only clutch bolt pattern is on the outer edge for a large 11" disc and p-plate.
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Old 06-12-2007, 10:53 PM
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I just saw my first the other day that was drilled for both clutch patterns, but who knows... could have been an automotive flywheel put in a boat

Otherwise, bobcrman has it spot on. Same castings, different prep.
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Old 06-13-2007, 06:30 AM
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Thanks guys, the guy only wants $20 for it, anf $12 to ship it(30 miles..but it's on the other side of Boston, not the most pleasant drive) so it sounds like a pretty good deal. I assume if the ring gear require relocation, it would be a matter of heating it up with a rosebud and moving and reinstalling it?
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Old 06-13-2007, 08:34 PM
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Correct. Tho I just knock the ring gear off with a hammer and large blunt chisel, then heat and re-install.
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