HOW TO IDENTIFY A MARINE 454 ENGINE WHATS BETTER ABOUT EM?

Old 08-21-2009, 05:44 PM
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SHANEV8
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Default HOW TO IDENTIFY A MARINE 454 ENGINE WHATS BETTER ABOUT EM?

I AM WANTING TO PURCHASE A 454 MARINE LONG BLOCK I FOUNT BUT I AM NOT FOR SURE ON HOW TO BE SURE IT IS A MARINE ENGINE. ANY HELP WOULD BE GREATLY APPRECIATED!
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Old 08-21-2009, 10:11 PM
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Tod74
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If it came from a boat it might be a marine engine.
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Old 08-22-2009, 06:38 AM
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FullTimeRacing
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look for major rust and pitting in the cyl's
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Old 08-22-2009, 06:34 PM
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TopspeedLowet
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Default Not much difference minus emission devices

Marine applications always used hardened valve seat inserts for sustained WOT use, and sometimes they are four bolt mains, where the passenger car and truck versions did not always have hardened valve seat inserts. Some real advanced salt water blocks have a rust preventing coating in the water jackets from aftermarket re-builders on high end stuff. There will not be any vacuum operated emission devices run off a TVS either if it is in tact still.
Bruce
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Old 08-22-2009, 06:52 PM
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MEMRACING62
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A LOT OF THEM ARE REVERSE ROTATION
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Old 08-23-2009, 09:01 AM
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ashbros
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Originally Posted by MEMRACING62
A LOT OF THEM ARE REVERSE ROTATION
x 2 and they usually are ran with a gear drive
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Old 08-24-2009, 01:33 PM
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Brass lined intake (water ports) and brass freeze plugs.
Dave
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Old 08-27-2009, 02:02 AM
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ashbros
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Is it still in the boat?

Well, I am just asking....... :lol:
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Old 08-27-2009, 06:13 PM
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I rent a building to a marine reapir guy, He has a 454 that came out of a boat setting on the floor and asked him about it, from what he says there is not much difference between marine and car motor, the difference is brass freeze plugs and ? ( can't remember ) getting old. LOL but he will sell motor as it sets for $ 400 its a 4 bolt main with oval port heads that need a freshening.
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