12-27-2015, 01:19 PM
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#15 |
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Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
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Re: Brumfield
Some years ago there were dyno tests done and posted on Fordbarn. The 5.5 head added about 10 H.P. and was the best bang for the buck to increase horsepower. There wasn't too much gain using the 6.0 over the 5.5 head, as I recall.
You also need a good cam, and not one with worn lobes and tappets. |
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