Clay Smith Cams Made in the USA Lifter Sets - Ford 170/200/250 CI Hi-Rev Hydraulic Flat Tappet Lifters are of the Highest Quality available
- These hydraulic lifters are precision-manufactured to maintain precise valve timing under all operating conditions.
- A patented constant orifice metering valve provides precise oil metering to the overhead valve train, and longer plungers or pistons provide increased bearing surfaces, resulting in longer lifter life.
- Their check valves are lightweight flat discs, allowing for higher speeds and more uniform operation than competitive lifters.
- Specifically designed to perform at higher engine speeds
*** However they are only required when using Full Roller Rocker Arms.