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Fenderjack

12-14-2013 02:43 PM

Performance of 496 manifolds over 454 manifolds

Know I seen it here some where. But is there any HP gains with 496 manifolds over stock 454 manifolds.I know there is a great weight difference with the aluminum ones.But is there any real HP or performance gains. JOHN SR

hadleycat

12-14-2013 05:22 PM

I replaced my stock 454 exhaust with aluminum 496 manifolds on my previous boat ( a 22 foot Powerquest). I went from 60 mph to 62 mph. Motor was a
454 mag carb. No other changes were made.

mike tkach

12-15-2013 09:41 AM

Quote:

Originally Posted by btnyamahade (Post 4041978)

I went from 60 mph to 62 mph. Motor was a 454 mag carb. No other changes were made.http://goo.gl/TjBP6T

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