[slowbird]

Originally Posted by Steve C.

Dave Bisschop intake dyno testing....

474ci engine / 290cfm CNC ported KRE D-port heads with 10.2 to 1 compression on 91 octane fuel with a 236/245 duration hyd. roller cam.

Intakes gasket matched to a 1233 Felpro gasket, each intake was mocked up to make sure port alignment was correct and each intake had the water crossover removed.

Stock iron factory intake with Q-jet carb.
515hp @ 52-5300rpm and 575 lb/ft @ 4000 rpm.

Factory cast iron with the CNC machined plenum with Q-jet carb.
527hp @ 5300rpm and 579 lb ft @ 4100rpm.

Edelbrock Performer RPM
541hp @ 5400 rpm and 591 lb ft @ 4000 rpm.

"The purpose of this test was to see how each intake behaved in this particular engine combination. Other combo's can and will have different results but I felt this info would be interesting to our customers to look at and may be helpful in parts selection"
Dave Bisschop


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Cool test!