The Street Performance hydraulic lifters are made from a cold formed body with a clipped axle and have 6,500 RPM capability. These lifters have .120” plunger travel and have an 80% fill rate with the test oil. The lifter wheels in this series are .700” diameter. 


Recommended Spring Pressure: 100-180 lbs Seat Pressure, 280-380 lbs Open Pressure.


 

The Performance hydraulic lifters are made from a billet body with a clipped axle and have 7,000 RPM capability. These lifters have .120” plunger travel and have an 80% fill rate with the test oil.  The lifter wheels in this series are .750” diameter.  


Recommended Spring Pressure: 100-200 lbs Seat Pressure, 280-400 lbs Open Pressure


 

The Hi-RPM hydraulic lifters are made from a billet body and have a clipped axle. These lifters have 7,000+ RPM capability with .120” plunger travel and have an 80% fill rate with the test oil. These lifters have a .750” diameter roller wheel for the .842” & .875” diameter lifters and a .810” diameter roller wheel for the .903” diameter lifters. The Internal tolerances are much tighter in this series. 

Do Not Use Oil Heavier Than 5W40! 

Recommended Spring Pressure : 100-225 lbs Seat Pressure, 350-550 lbs Open Pressure


 

The HLT, also known as Limited Travel lifters, have a clipped axle and are intended for use in Stock Racing Classes where some plunger travel is required. These lifters have between .015”-.030” plunger travel before going solid. Due to the short plunger travel on these lifters, there is some Valve Train Noise that can be associated with them.


Recommended Spring Pressure: 100-250 lbs Seat Pressure, 285-650 lbs Open Pressure