Offshoreonly.com - Stock horse power of 454 and 502 mags???

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simon1401

10-19-2010 01:28 PM

Stock horse power of 454 and 502 mags???

Can anybody tell me what stock horse powers they did in these engines?

Mach 1

10-19-2010 02:06 PM

81hydrostream

10-19-2010 03:19 PM

I think the 454 mag was 365

Boat1

10-19-2010 04:43 PM

If your talkin the older carbureted versions the 454 mag was 365 hp and the 502 mag was 390 hp

simon1401

10-19-2010 10:01 PM

Thanks guys, yes I was meaning mpi's. Did mercruiser do any high output versions or did it go straight to 500Efi from this?

HiMark Racing

10-29-2010 09:53 PM

The Mag was the HO I believe

Back4More

10-29-2010 09:57 PM

I remember those days....forged rotating assembles.

jeffswav

10-29-2010 11:15 PM

Like was said the MAG MPI engines are 385HP for 454 and 415HP for 502.

Quinlan

10-30-2010 06:37 AM

And my old 29 outlaw w 454 mags- 800 PLUS hours and still running strong!

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