We have developed
a single plane intake manifold for use on 5.4L DOHC modular engines.
Designed for mid to hi-rpm horsepower these intakes will allow the use
of much more radical cams than was previously possible. TPI intakes
take advantage of pressure pulses created by the opening and closing
of the intake and exhaust valves. These pressure pulses have the effect
of ramming air into the cylinders. The length and volume of the intake
tracts determines at what RPM this ramcharging takes place.The downside
to this is that it occurs only over a limited rpm range. About 1000
RPM. The emphasis on factory TPI intakes is low to mid RPM torque and
horsepower. Not what you need for hi-performance use. These engines
need to wind to create horsepower. The higher RPM's is where the superiority
of the 4 valve heads really shine. Due to the long runner design of
the factory intakes they do not flow well at high RPM, nor do they respond
well to hi-lift long duration cams. Up to now there was really no option
other than fabricating a very expensive sheet metal intake.
The original design
of this intake was created using computer modeling software. We have
spent countless hours designing and testing the individual runners to
help promote low RPM velocity without degrading Hi-RPM flow. Each runner
is individually designed to allow as close as possible, the same flow
for all 8 runners.
Want to make horsepower? This is the intake to do it. |
