"Anti-Pump Up" lifters allow the engine to reach it's maximum RPM potential (with the correct cam and components). The "bleed rate" of this lifter is maintained by micro tolerances that prevent pump-up and limiting of full RPM potential.
- Application: Oldsmobile V8 260 - 455
- Diameter: .842"
- Seat Height: 1.755"
- Quantity: 16