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The holley street dominator is a good low RPM manifold NOT a high RPM piece at all. The runners are very small and long and the plenum is not real big either.



My experience with this combination in this car (street hemi grind cam, Street Dominator, and Holley DP650 mech secondaries) has been the opposite. It has difficulty in the lower RPMS and pulls like gangbusters from about 2500 to 2800 all the way through 5500. The Street Dominator does have small runners. Definitely smaller than the ports on the 360 heads. The plenum is short although sized for a spread bore carb. It is a fairly open though short plenum. In my experience the smaller primary side got fairly well fuel washed while the secondary side tended to accumulate some carbon. Perhaps I never got it jetted/adjusted correctly. As I said earlier it was an old school build. I believe there are better cam, intake, and carb combinations available now.