0
0
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories


's Account
1-800-345-4545
Gift Cards
Track Order
Help
Catalog
COMP Cams 12-326-4
Representative Image
Product images may differ from actual product appearance.

COMP Cams Magnum 286H Hydraulic Flat Tappet Camshaft Lift: .490" .490" Duration: 286°/286° RPM Range: 2200-6200

249-12-326-4

Free Shipping

$179.99
COMP Cams Magnum 286H Hydraulic Flat Tappet Camshaft Lift: .490" .490" Duration: 286°/286° RPM Range: 2200-6200 $179.99
Out of stock
To order this item contact Customer Service at 1-800-345-4545.
Magnum 286H Hydraulic Flat Tappet Camshaft
Lift: .490''.490"
Duration: 286°/286°
RPM Range: 2200-6200

COMP Cams 12-326-4 Details

Chevy 262-400ci Small Block 1955-98

*Note: In order to use these camshafts in 1955-57 265ci blocks, it is necessary to machine a small groove in the rear main journal of the cam to allow oil flow to the top of the engine.

Needs 9:1 compression, 2800 stall, headers, gears. Choppy idle.

Operating Range:2200-6200 RPM
Duration Advertised:286° Intake / 286° Exhaust
Duration @ .050'' Lift:236° Intake / 236° Exhaust
Valve Lift w/1.5 Rockers:.490'' Intake / .490'' Exhaust
Lobe Separation Angle:110°

Specifications:

Exh. Duration @ .050 in. (Deg)
236
Exh. Duration Advertised (Deg)
286
Exhaust Valve Lift (in.)
0.49
Int. Duration @ .050 in. (Deg)
236
Intake Valve Lift (in.)
0.490
Usage
Street/Strip
Quantity
Sold individually
Lobe Separation (Deg)
110
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.49
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.49
Valve Lift with Factory Rocker Arm Ratio
0.490 int./0.490 exh.
Advertised Duration
286 int./286 exh.
Computer-Controlled Compatible
No
Valve Springs Required
Yes
Cam Style
Hydraulic flat tappet
Exhaust Duration at 050 inch Lift
236
Intake Duration at 050 inch Lift
236
Duration at 050 inch Lift
236 int./236 exh.
Advertised Intake Duration
286
Advertised Exhaust Duration
286
Basic Operating RPM Range
2,200-6,200
Grind Number
CS 286H-10
Manufacturer's Part Number:
12-326-4
Shipping Weight:
8.73
Package Height:
2.8
Package Depth:
24.3
Package Width:
2.9

Comp Cams Magnum Camshafts are very aggressive and specifically designed for the street enthusiast looking for more power with that Pro Street sound. Intended for performance oriented vehicles that will see little street use. The idle characteristics of your engine will change due to the increased duration and overlap of the Magnum Cam Series. You will notice a racey idle with the 280-grind while the 292 and 305-grinds will produce a rough or ''rumbly'' idle. Stock components are generally incompatible. Changes are needed in rear end gear ratios, headers and the torque converter. Magnum Cams will affect your power accessories to a certain extent. The 280 and 292-grinds are the biggest cams that should be used with power assisted brakes, air conditioning, etc. You should remember that the bigger the engine is, the less the cam will affect the vacuum which affects your power accessories. The smaller your engine is, the more the Magnum Camshaft will affect your power accessories. Most late model vehicles have a vacuum canister. If your vehicle does not have a vacuum canister, it may be necessary to add one.

Features:
  • Great high RPM power
  • Easy on valve train parts
  • Can be used with mild ratio rocker arms and traditional performance valve springs
  • Best with aftermarket converter and 9.5:1+ compression

    268H Series
    Good street performance with stock converter, choppy idle.

    270H Series
    Great for high performance driving in street machines. The 270H has a rough idle in small blocks and a noticeable idle in big blocks. This is the largest cam that can be used with a stock torque converter. The 270H should not affect power accessories, but should be used with headers and 4bbl carburetor.

    280H Series
    Best for serious street machines. This cam has a definite rough idle and will sometimes affect power accessories. It can be driven extensively on the street or raced on the weekends. The 280H needs an aftermarket converter, intake manifold and headers.

    286H Series
    Designed to fill in the gap between teh 280H and 292H. For serious street machines and bracket racers. With a rough idle and lower vacuum signal, this is not an average street cam. At least a 2500-RPM converter must be used, but a 3000 is recommended.

    292H Series
    This cam is for the serious street/strip type car. An aftermarket torque converter should be used as well as headers, intake and increased compression. The 292H has a radical, rough idle.

    305H Series
    The 305H should really be considered for Pro-Street type cars where actual streetability is not a major concern. The design of this cam also makes it ideal for all bracket racing engines. Major engine modifications are needed as well as transmission and driveline improvements. The 305H works best in large cubic inch engines and has a radical idle. This is the only hydraulic cam in the series that does not have an advance made into it and will need to be degreed in.

    Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.

    Complete Kits are indicated by a K in their part number and include Camshaft, Lifters, Timing Chain & Gears, Valve Springs, Retainers, Locks, Assembly Lube, Decals, and Instructions.

    Small Kits are indicated by a SK in their part number and include Camshaft, Lifters, Timing Chain Set, Assembly Lube, Decals, and Instructions.

  • How do you install the timing gears dot to dot?

    Asked by: Jeff77
    The instructions are included with the camshaft, It also depends on the timing set being used.
    Answered by: Rusty B
    Date published: 2018-07-23
    • y_2019, m_2, d_19, h_24CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.11
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_1
    • loc_en_US, sid_10001_10001_32994, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Items You Need

    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.

    Tools:

    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.