Quote:
Originally Posted by Jeff Teuton
The Mopar's use a 4 hole 1 3/4 in on the DP's which is the same size as 750 CFM 4150 series carb, but it is rated @ 1000 cfm. The 426 Hemi uses a 2" which is the same as a 4500 series base and is rated @ 1600 cfm. Course we are only flowing air. The Copo 427 single blade has a slightly larger area than the 2" 4 bore that we use.
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Also, your 4 1 3/4" throttle blades are not encumbered by venturis and boosters getting "in the way". Thus the higher flow ratings.