COMP Cams 4-Pattern Hydraulic Roller Camshafts 12-471-44

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: 12-471-44
Part Type: Camshafts
Product Line: COMP Cams 4-Pattern Hydraulic Roller Camshafts
HP Direct Part Number: CCA-12-471-44
UPC: 036584259626
Cam Style: Hydraulic roller, Retro-fit
Camshaft Use: Street/Strip
Camshaft Manufacturers Description: Best choice for smaller cubic inch applications with very good heads. Extremely wide power range. 1,800+ stall.
Basic Operating RPM Range: 1,700-6,300
Intake Duration at 050 inch Lift: 219/217
Exhaust Duration at 050 inch Lift: 229/227
Duration at 050 inch Lift: 219 int./229 exh., 217 int./227 exh.
Advertised Intake Duration: 271/269
Advertised Exhaust Duration: 283/281
Advertised Duration: 271 int./283 exh., 269 int./281 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.603 in./0.600 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.590 in./0.587 in.
Valve Lift with Factory Rocker Arm Ratio: 0.603 int./0.590 exh., 0.600 int./0.587 exh.
Lobe Separation (degrees): 108
Camshaft Gear Attachment: 3-bolt
Remanufactured: No
Computer-Controlled Compatible: No
Grind Number: 269QIO8
Valve Springs Required: Yes
Quantity: Sold individually.