Both of those links have great info Stevo, but they don't touch on the big plus of having good swirl rates at low rpms and low flow rates.
This contributes greatly to combustion efficiency at any rpm, but especially to Torque numbers made at low rpms and air to fuel ratio numbers.
And yes, if the op is running ported Kaufman D port heads then he will be better off for his needs then starting off with Edelbrock round port heads.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
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