Quote:

The double pumper has the ability to give a massive pump shot in all four venturies as all four open in light throttle situations,



Where did you come up with this theory , "light throttle" situations, try more like "half throttle", unless your useing one of these holleys or any with 1.1 linkage.

http://www.jegs.com/i/Holley/510/0-4224/10002/-1

75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU