Seeing is believing. I love the look, the sound and the performance of a sixpack. Here's a comparison of a sixpack and a four barrel on my 493" pulled 682 horsepower with 3-2's, ported Edelbrock aluminum manifold and small port Indy EZ heads, with a 550 lift hydraulic cam spinning at only 5500 rpm. Here's the article on it from Hughes.

http://www.hughesengines.com/TechArticles/13dynotest684hp500cid6pack4bbljcross012007.php


1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)