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Pushrod Tubes

October 6 2017 at 4:56 PM
Lon S  (Login tnlport)
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Response to Need some help.....need some ovalized tubing for a TP intake.

Rumor had it that Holman Moody developed a wing shaped pushrod tube for their NASCAR tunnel ports.
Having access to a Superflow, I made wings for the port I was flowing by folding sheet metal around
the tube, and was rewarded by a 20+ increase in flow. Don't know how that might affect wet flow, but
dry flow sure liked the wing. Don't know how H-M accomplished the wing shape, but a tapered die could
be made up to reform round tubing AND give the needed clearance.

 
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