A little more info on the subject...
The center hung float bowls of the Holley carby were designed by Smokey Yunik in the 1950's to alleviate fuel starvation problems encountered in the high speed corners of NASCAR racing on the high speed oval tracks. The float pivots are oriented in such a way as to not be affected by centiufugal forces acting sideways upon the carby.
Ever notice the Holley street carbys have "side hung" float bowls? Aha! The pivot orientation of the side hung floats, and the narrower fuel bowls are affected less by acceleration and deceleration.
The last Autolite carb design from Ford was the 4300 spread bore, and the last carb design by Carter was the Thermoquad. Both carbys feature "U" shaped floats, called pontoon floats, and narrow fuel bowls, that were designed to perform optimally under acceleration, deceleration, and cornering. Some enthusiasts, and the Carter carburetor company, believed the Thermoquad was the best 4 barrell carburetor ever designed.
cowboy from hell
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