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Stock horse power of 454 and 502 mags???

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Stock horse power of 454 and 502 mags???

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Old 10-19-2010, 01:28 PM
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Default Stock horse power of 454 and 502 mags???
Can anybody tell me what stock horse powers they did in these engines?
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Old 10-19-2010, 02:06 PM
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http://brucebullockmarine.com/mercury/350-454-502.html

Here ya go:

502 MPI: 415
454 MPI: 385
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Old 10-19-2010, 03:19 PM
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I think the 454 mag was 365
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Old 10-19-2010, 04:43 PM
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If your talkin the older carbureted versions the 454 mag was 365 hp and the 502 mag was 390 hp
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Old 10-19-2010, 10:01 PM
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Thanks guys, yes I was meaning mpi's. Did mercruiser do any high output versions or did it go straight to 500Efi from this?
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Old 10-29-2010, 09:53 PM
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The Mag was the HO I believe
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Old 10-29-2010, 09:57 PM
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I remember those days....forged rotating assembles.
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Old 10-29-2010, 11:15 PM
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Like was said the MAG MPI engines are 385HP for 454 and 415HP for 502.
Last edited by jeffswav; 10-29-2010 at 11:17 PM.
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Old 10-30-2010, 06:37 AM
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And my old 29 outlaw w 454 mags- 800 PLUS hours and still running strong!
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