Drag Race Mechanical Roller Camshaft Lift: .630" /.630" Duration: 300/308 RPM Range: 4200-7200
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-12-908-9

Drag Race Mechanical Roller Camshaft Lift: .630" /.630" Duration: 300/308 RPM Range: 4200-7200

$55895
ShippingShips on Oct 28, 2026
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Chevy 262-400ci Small Block 1955-98
    Drag Race Mechanical Roller Camshaft
    Lift: .630''/.630''
    Duration: 300/308
    RPM Range: 4200-7200


    *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.

    **Note: Requires bronze gear, thrust button & wear plate.

    4500 stall converter, 11:1 compression, good power.

    Operating Range:4200-7200 RPM
    Duration Advertised:300° Intake / 308° Exhaust
    Duration @ .050' Lift:264° Intake / 270° Exhaust
    Valve Lift w/1.5 Rockers:.630' Intake / .630' Exhaust
    Valve Setting:.026' Intake / .028' Exhaust
    Lobe Separation Angle:106°

    265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10


    4500+ stall, 11:1 compression, lower gears needed.

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 Height2.7
Package Width3.1
Package Length24.4
Weight8.77 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)270
Cam StyleMechanical roller tappet
Grind NumberCS 300B-R6
Exh. Duration Advertised (Deg)308-6
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.63
Int. Duration @ .050 In. (Deg)264
Basic Operating Rpm Range4,200-7,200
Intake Valve Lash0.026 in (0.66 mm)
Intake Valve Lift0.63 in (16.002 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)300-5
Lobe Separation (Deg)106
Rpm Range4200-7200
Advertised Duration300 int./308 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.63
UsageStrip
Valve Lift With Factory Rocker Arm Ratio0.630 int./0.630 exh.
QuantitySold individually
Exhaust Valve Lash0.028 in (0.711 mm)
Exhaust Valve Lift0.63 in (16.002 mm)
Advertised Intake Duration300
Intake Duration At 050 Inch Lift264
Exhaust Duration At 050 Inch Lift270
Advertised Exhaust Duration308
Lifter TypeMechanical Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift264 int./270 exh.
Valve Springs RequiredYes
Vendor Part Number12-908-9
Package Qty1
Package TypeEA
No Questions
No Reviews

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