Convert your hydraulic tappets which are known to float at high RPM to solid adjustable tappets. We put the adjuster into the tappet body with a design to increase the stability of the pushrod at greater angles. A tapered split lock nut is used for the best possible way to lock the adjusting bolt into the lifter body. A 5/16-32 extra fine thread is used for easier and closer adjustments. All push rods are long enough to accommodate engines with stroker cylinders. All wear surfaces are hardened for maximum durability. 1/2" O.D. 6061-T6 aircraft aluminum.
FITS:
1966-1984 Shovelheads