i have a 4 hp briggs engine and i was at a local race shop and they stated to put the head off of the 4 hp on the 5 hp block he stated that it waslike installing a decked head. Anybody heard of this?
go to 4cycle.com look up 4hp head in the flathead forum do a search there is a recent thread on this professsional engine builders with dynos factual proof will tell you it will loose power
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