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COMP Cams 12-477-44

COMP Cams Comp Cams 4-Pattern Camshafts


Free Shipping Ships directly from the manufacturer on 09/27/19
Save $20 Off $250, $50 Off $500, $100 Off $1,000, $150 Off $2,000. Promo Code: SAVEMORE exclusions apply

COMP Cams Comp Cams 4-Pattern Camshafts $803.99
Out of stock
4-Pattern .900" Base Circle Retro-Fit Hydraulic Roller Camshaft
Small Block Chevy
Intake Lift: .637"/.637"
Exhaust Lift: .621"/.621"
Lobe Separation Angle: 110.5°/109.5°
RPM Range: 3200-7500

COMP Cams 12-477-44 Details

Small Block Chevy 262-400ci 1955-98

  • .900" Base Circle Retro-Fit

    Intake Duration: 313°/311°
    Exhaust Duration: 325°/323°

    Recommended in highly modified 420+c.i. stroker applications with higher compression. 3500+ stall.

  • Specifications:

    Engine Make/Size
    Chevy Small Block (262-400)
    RPM Range
    Lifter Type
    Hydraulic Roller Retrofit
    Int. Duration Advertised (Deg)
    Exh. Duration @ .050 in. (Deg)
    Exh. Duration Advertised (Deg)
    Exhaust Valve Lift (in.)
    Int. Duration @ .050 in. (Deg)
    Intake Valve Lift (in.)
    Sold individually
    Lobe Separation (Deg)
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    Valve Lift with Factory Rocker Arm Ratio
    0.637 int./0.621 exh., 0.637 int./0.621 exh.
    Advertised Duration
    313 int./325 exh., 311 int./323 exh.
    Computer-Controlled Compatible
    Valve Springs Required
    Cam Style
    Hydraulic roller tappet
    Exhaust Duration at 050 inch Lift
    Intake Duration at 050 inch Lift
    Duration at 050 inch Lift
    260 int./270 exh., 258 int./268 exh.
    Advertised Intake Duration
    Advertised Exhaust Duration
    Basic Operating RPM Range
    Grind Number
    Camshaft Gear Attachment
    Manufacturer's Part Number:
    Shipping Weight:
    Package Height:
    Package Depth:
    Package Width:

    Comp Cams 4-Pattern Camshafts are hydraulic rollers designed to optimize valve events based on runner length and feature a large increase in both area under the curve and stability at high RPM

    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. 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 4-Pattern Camshafts are the very first series of cams designed to accommodate this difference in length and avoid valves closing at the wrong times. NASCAR teams have been using camshafts designed this way for years, and using lessons learned along with them, 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.

    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.

    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.

    Note: Upgraded valve train components and aftermarket cylinder heads required.

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.


    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.