Thanks for the feedback. Since the original pushrod part number P3577121 and the superseded part number P4529542 are discontinued do you know what pushrod I should use or a source to find them?pushrods are too long - there should be at least 1 thread showing below the rocker arm - look it up - it is in the mopar engine book! preload should be 0.040 to 0.060. One turn of the screw is 0.040.
Btw spinning a stock t/a motor to 7k is a waste of energy...