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And if installed properly, there is minimum friction using a spring - you need to shim between the spring and rocker and should always shim between the rocker and hold-down.

Some have mentioned the rocker moving sideways enough that the rocker tip moves off the valvestem. I'm not saying it can't happen BUT what heads have that wide of a pushrod hole that will allow the pushrod that much movement? Stockers don't and neither do my Indy EZ's. Just sayin'!

Take a look at the Mopar stock "906" heads, lots of room That rocker arm and pushrod was on the intake on the #6 cylinder

Last edited by Cab_Burge; 10/24/14 04:53 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)