Comp Cams  Magnum  Mechanical Flat Tappet Camshafts
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-11-218-4

Comp Cams Magnum Mechanical Flat Tappet Camshafts

$30995
ShippingShips on 09/08/2026
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Chevy 396-454ci Big Block 1965-96
    Magnum 282S Mechanical Flat Tappet Camshaft
    Lift: .561''/.561"
    Duration: 282°/282°
    Lobe Separation Angle: 110°
    RPM Range: 2000-6000


    *Note: In order to use these camshafts in 1965-66 396/427ci blocks, it is necessary to machine a 3/16' wide x 7/64' deep groove in the rear main journal of the cam to allow oil flow to the top of the engine.

    Excellent for street machines. Use 2500+ stall coverter, headers, 9.0:1 compression and lower gears. Rough idle.

    Operating Range:2000-6000 RPM
    Duration Advertised:282° Intake / 282° Exhaust
    Duration @ .050' Lift:236° Intake / 236° Exhaust
    Valve Lift w/1.7 Rockers:.561' Intake / .561' Exhaust
    Valve Setting:.022' Intake / .022' Exhaust
    Lobe Separation Angle:110°

    Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572


    Excellent for street machines. Use 2500+ stall, headers, 9:1+ compression and lower gears. Rough idle.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Part TypeCamshaft
BrandCOMP CAMS
Package Height2.75
Package Width2.87
Package Length24.5
Weight10.35 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)236
Cam StyleMechanical flat tappet
Grind NumberCB 282S-10
Exh. Duration Advertised (Deg)282
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.561
Int. Duration @ .050 In. (Deg)236
Basic Operating Rpm Range2,000-6,000
Intake Valve Lash0.022 in (0.559 mm)
Intake Valve Lift0.561 in (14.249 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)282
Lobe Separation (Deg)110
Rpm Range2000-6000
Advertised Duration282 int./282 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.561
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.561 int./0.561 exh.
QuantitySold individually
Exhaust Valve Lash0.022 in (0.559 mm)
Exhaust Valve Lift0.561 in (14.249 mm)
Advertised Intake Duration282
Intake Duration At 050 Inch Lift236
Exhaust Duration At 050 Inch Lift236
Advertised Exhaust Duration282
Lifter TypeMechanical Flat Tappet
Duration At 050 Inch Lift236 int./236 exh.
Valve Springs RequiredYes
Vendor Part Number11-218-4
Package Qty1
Package TypeEA
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