Seller claims 454 Magnum 420hp stock - really?
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Seller claims 454 Magnum 420hp stock - really?
Hi. I'm looking at a '79 Formula 233 this weekend. The seller says it has a 1996 or 1998 FWC 420hp stock 454 Magnum repowered in 2012 and a new Bravo 3. When I look up the serial number, I get 1997 MERCRUISER 3.0LX ALPHA so I'm confused. See attached for photos. Is it really a 454 Magnum with 420hp? Is it Gen V or VI? See attached for pictures.
There are 500 hrs on the engine, and he claims to have changed motor and drive oil every 80 hrs. If true, what kind of longevity should I expect and when should I expect to rebuild?
Thanks!
http://imgur.com/a/IbdIE
There are 500 hrs on the engine, and he claims to have changed motor and drive oil every 80 hrs. If true, what kind of longevity should I expect and when should I expect to rebuild?
Thanks!
http://imgur.com/a/IbdIE
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Sure looks like a 365 hp to me ...
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Flame arrestor cover means nothing if engines been replaced or rebuilt.
Get some documentation !
BTW; If I remember right, the 420 had Gill Exhaust and a Weiand Single Plane Intake and a Holley carb. Could be wrong, been many years.
Get some documentation !
BTW; If I remember right, the 420 had Gill Exhaust and a Weiand Single Plane Intake and a Holley carb. Could be wrong, been many years.
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http://www.marinemechanic.com/merc/d...lockcodes1.PDF
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http://www.marinemechanic.com/merc/d...lockcodes1.PDF
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http://www.marinemechanic.com/merc/d...lockcodes1.PDF
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Edit in: relaxed my brain, lol, and remembered 100% they where 370's. Man, time is flyin.
Last edited by SB; 09-17-2015 at 04:30 PM.
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http://www.marinemechanic.com/merc/d...lockcodes1.PDF