camshaft hydraulic flat tappet advertised duration 284/305 lift .575/.595 chevrolet big block each

CC-11-556-4:
HYDRAULIC - High performance street, 100-150 hp nitrous kit or small blower.

CC-11-560-4:
HYDRAULIC - Street machines with 125+ hp nitrous kit, needs 2000+ stall, 3.73 gear, choppy idle.

CC-11-568-4:
HYDRAULIC - Pro Street applications w/ multi-stage nitrous kits, 671 blower or Vortec Supercharger and 3000+ stall.

CC-11-572-4:
HYDRAULIC - Race only, multi-stage kits or 871 blower, needs good heads, intake, gears and 3500+ stall.