Topline Hy-lift Johnson Retro-Fit High RPM Hydraulic roller lifters with direct shot oiling are a great choice of aftermarket lifters to suit your small block Chev engine. Used and recommended by quality engine builders around the world for high rpm hydraulic roller engines.
Part #HLJ-A-2340SE
Suits small block Chevy V8 283, 305, 307, 327, 350, 383, 400. NOT suitable for applications requiring a +.300" tall link bar
Top Line Hy-Lift has been an automotive supplier for more than 100 years so you can trust the quality! They offer 100% American made hydraulic roller lifters for the LS and LT platforms
“S” or Slow Design: These parts have an “S” designation after their part number. So a Slow Design part number will look like A-0817S. These Lifters have a Leak Down on the upper end of the scale from 90 to 120 seconds. In a performance application these lifter will actually act like a mechanical lifter with very little effective loss of valve lift or duration at any RPM. Just like the “R” Lifters these have a much smaller Leak Down range that will also balance all of the cylinders to each other. These lifters are very hard to produce because the TOTAL clearance between the I.D. of the Body and the Piston assembly is reduced to less than 0.000120”, or 1/30 of a human hair. These are like super heavy duty shocks and can handle higher spring pressures without collapsing like the standard and “R” lifters. The only draw back of this type of lifter is that if the valve train should “Float” because of reaching a higher RPM than the valve springs can handle these lifters will try to take up the excessive clearance causing the valve to hang open resulting in a loss of power. Because these are Hydraulic lifters there is no lash or additional adjustment needed and the full cam profile is translated to the valves. In testing, not only did these lifters result in more power and higher RPM reading over other Hydraulic lifters they also reduced valve train wear and failure compared to mechanical lifters.
Direct Shot Roller Lifters: Hy-Lift Johnson introduces Direct Shot Bearing Oil injection system as an option to all of our roller Lifters, Identified by an “E” after the part number like A-2148E. Our system utilizes a proprietary oil band system that prevents debris from clogging up the oil supply hole. Our Oil Supply hole is located down from the Engine oil supply gallery where debris travels. This prevents pieces of debris from clogging up the 0.012” diameter oil supply hole. Other designs supply oil from the oil band area which is exposed to debris that might be in the oil system. Once the oil hole is clogged the benefits of this type of system are rendered useless. We also provide holes to each end of the bearing for extra reliability. Extreme engine testing has shown that our system has improved durability by as much as 300%.
hylift a-2340SE