Comp Cams Camshaft 4-Pattern Hydraulic Roller Advertised Duration 30 12-476-44

Comp Cams Camshaft 4-Pattern Hydraulic Roller Advertised Duration 30

Notes: Camshaft 4-Pattern Hydraulic Roller Advertised Duration 307 OB/305 IB Int. 319 OB/317 IB Exh. .638 OB/.638 IB Int. Lift .622 OB/.622 IB Exh. Lif

The 4-Pattern hydraulic roller cams are CNC-Machined from steel billet cores with cast iron distributor drive gears. The cams also feature a tight lobe separation for both excellent performance and a throaty sound. The camshafts feature four different lobe patterns with one intake and exhaust design for outboard runners, and another intake and exhaust design for the inboard runners. While the four inboard cylinders are all the same grinds, the outboard exhaust openings are two degrees earlier, with outboard intake closings coming two degrees later. This is the first ever use of technology in street vehicles to balance air/fuel ratio per cylinder and can net you a possible 1000+ RPM over other hydraulic rollers and anywhere from 5-20+ horsepower peak to peak, depending on cylinder head flow.