COMP Cams 4-Pattern Hydraulic Roller Camshafts 12-474-44

To make the most power from your engine, you need to optimize the air ingested and captured by avoiding valves closing too soon or too late. COMP Cams 4-pattern hydraulic roller camshafts are the first series of cams designed to accommodate a difference in runner length and avoid valves closing at the wrong times. Any conventional center-layout single throttle body or carbureted V8 intake manifold features longer outboard runners and shorter inboard runners, meaning that each valve event should occur at a different moment. COMP Cams has designed a series of cams that optimizes valve events and features a large increase in both area under the curve and stability at high rpm. They 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 central cylinders are all the same grinds, the outboard exhaust openings are two degrees earlier, with outboard intake closings coming two degrees later. NASCAR has been utilizing this technology for years. COMP Cams is now applying this same knowledge in street vehicles to balance air/fuel ratio per cylinder. These cams are CNC-ground from steel billet cores. They feature cast iron distributor gears and utilize a series of lobes with over .600 in. valve lift and stability up to 7,500 rpm, all while providing more consistent cylinder to cylinder torque. They also feature tight lobe separation for both excellent power and a throaty sound. Designed for small block Chevy, big block Chevy, and small block Ford carbureted or fuel injected applications, the design is exclusive and unique to COMP Cams.Brand: COMP Cams
Manufacturer's Part Number: 12-474-44
Part Type: Camshafts
Product Line: COMP Cams 4-Pattern Hydraulic Roller Camshafts
HP Direct Part Number: CCA-12-474-44
UPC: 036584259657
Cam Style: Hydraulic roller, Retro-fit
Camshaft Use: Street/Strip
Camshaft Manufacturers Description: Excellent for street/strip applications with good heads and raised compression in high RPM engines. 3,200+ stall.
Basic Operating RPM Range: 2,900-7,200
Intake Duration at 050 inch Lift: 243/241
Exhaust Duration at 050 inch Lift: 253/251
Duration at 050 inch Lift: 243 int./253 exh., 241 int./251 exh.
Advertised Intake Duration: 295/293
Advertised Exhaust Duration: 307/305
Advertised Duration: 295 int./307 exh., 293 int./305 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.638 in./0.637 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.622 in./0.622 in.
Valve Lift with Factory Rocker Arm Ratio: 0.638 int./0.622 exh., 0.637 int./0.622 exh.
Lobe Separation (degrees): 108
Camshaft Gear Attachment: 3-bolt
Remanufactured: No
Computer-Controlled Compatible: No
Grind Number: 293QIO8
Valve Springs Required: Yes
Quantity: Sold individually.