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454...is it a HO or not?
how can you find out the power rating of a 454 mag?
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Fixx
Originally Posted by tnc110
(Post 3450178)
how can you find out the power rating of a 454 mag?
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Originally Posted by mrfixxall
(Post 3450191)
..take the serial number iff the side of the block or on the intake and call merc.
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365 HP if its carb'd and 385 if its EFI
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Ok004424
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Serial Number Range
-------------------------------------------------------------------------------- 454 MAG. BRAVO (GEN. V) GM 454 V-8 1996-1997 0F801700 - 0K999999 |
Originally Posted by tnc110
(Post 3450390)
Ok004424
See page 1B-4 http://www.boatfix.com/merc/Servmanl/16/16B1R2.PDF |
So, does that mean it is or is not a ho engine? Forged internal rather than cast?
Originally Posted by lakematdude
(Post 3450838)
Serial number OK004424, Model number 4454110KS 1997 MERCRUISER W/PS, TWO PC EX, GEN 6, 454 BRAVO, with a carburetor = 350hp.
See page 1B-4 http://www.boatfix.com/merc/Servmanl/16/16B1R2.PDF |
The is no such thing as an HO engine for a Merc 454. Its either a Magnum engine or its a regular 454/7.4. The 454magnums have all good forged internals.
The 350 hp rating is at the prop. Its rated 365hp at the crank. |
Thank you.
Originally Posted by Griff
(Post 3452328)
The is no such thing as an HO engine for a Merc 454. Its either a Magnum engine or its a regular 454/7.4. The 454magnums have all good forged internals.
The 350 hp rating is at the prop. Its rated 365hp at the crank. |
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