Drag Race Mechanical Roller Camshaft Lift .775"/.748" Duration 324/332 RPM Range 5200-7500
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-11-721-9

Drag Race Mechanical Roller Camshaft Lift .775"/.748" Duration 324/332 RPM Range 5200-7500

$55895
1 left in stock
ShippingShips on Sep 14, 2026
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Chevy 396-454ci Big Block 1965-96
    Drag Race Mechanical Roller Camshaft
    Lift .775"/.748"
    Duration 324/332
    RPM Range 5200-7500

    *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.

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

    Super Gas / Super Comp, 5000 stall converter or 4-speed manual, 500+ ci

    Operating Range:5200-7500 RPM
    Duration Advertised:324° Intake / 332° Exhaust
    Duration @ .050' Lift:284° Intake / 292° Exhaust
    Valve Lift w/1.7 Rockers:.775' Intake / .748' Exhaust
    Valve Setting:.026' Intake / .028' Exhaust
    Lobe Separation Angle:112°

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


    Bracket race 500-572c.i.

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 Height2.8
Package Width3.0
Package Length24.4
Weight10.4 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)292
Cam StyleMechanical roller tappet
Grind Number324AR-12
Exh. Duration Advertised (Deg)332
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.775
Int. Duration @ .050 In. (Deg)284
Basic Operating Rpm Range5,200-7,500
Intake Valve Lash0.026 in (0.66 mm)
Intake Valve Lift0.775 in (19.685 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)324
Lobe Separation (Deg)112
Rpm Range5200-7500
Advertised Duration324 int./332 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.748
UsageStrip
Valve Lift With Factory Rocker Arm Ratio0.775 int./0.748 exh.
Camshaft Gear Attachment3-bolt
QuantitySold individually
Exhaust Valve Lash0.028 in (0.711 mm)
Exhaust Valve Lift0.748 in (18.999 mm)
Advertised Intake Duration324
Intake Duration At 050 Inch Lift284
Exhaust Duration At 050 Inch Lift292
Advertised Exhaust Duration332
Lifter TypeMechanical Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift284 int./292 exh.
Valve Springs RequiredYes
Vendor Part Number11-721-9
Package Qty1
Package TypeEA
No Questions
No Reviews

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