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what one is better for low-end than the other.

strickly speaking a dual plane is but they are all a compromise(some more than others) & for instance the Holley street dominator single plane intake (the big block one for sure) has always dyno tested pretty good in the lower ranges.


Did they offer 2 different "street dominators" for a given engine?? All of em Ive seen, (for a small block anyways) are dual plane.