In a message dated 9/17/2001 6:03:17 PM Pacific Daylight Time,
r.hammond@sympatico.ca writes:
> Rich,
> I'm glad you could put that to rest. ;-)
> I'm guessing that most of the really hot Fords are blown; overcoming the
> intake
> shortcomings.
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A blower won't overcome the Flatty's intake shortcomings, just mask
them to some degree. The best performing Flatty's have either placed all the
ports through the upper (intake) surface of the block or re-routed the end
exhaust ports out of the ends of the block and the center cylinder exhausts
out the top where the intake manifold exhaust heater formerly resided.
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> It makes sense that the OHV GMC would have more, especially at higher revs.
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The GMC is not usually thought of as a high-revving engine when
compared to the Flatty, however teams such as Don Ferguson and BMR have had
lots of success by stiffening the lower end with better cranks, rods,
girdles, steel main caps, etc., and turning them up between 6000 & 7000 RPM.
The big advantage enjoyed by the GMC has always been the gobs of low
end torque, a starting point displacement of 270ci or 302 ci (compared to 239
ci or 255 ci for a Flatty), and overhead valves..........Ardun Doug King
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