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Comp Cams Marine Mechanical Roller Camshafts
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-11-745-9

Comp Cams Marine Mechanical Roller Camshafts

$50595
ShippingShips on 09/10/2026
Lowest PriceLowest Price Guarantee

Big Block Chevrolet 396-454ci 1965-96
    Mechanical Roller Marine Camshaft
    Big Block Chevy 396-454ci
    Lift: .772"/.772"
    Duration: 306°/319°
    Lobe Separation Angle: 110°
    RPM Range: 5000-7500

    Comp jet. Blown gas flat or hydro.

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


    Comp jet. Blown gasoline flat or hydro.

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

Comp Cams Marine Mechanical Roller Camshafts provide great power for your marine engines. Available for a variety of applications, these cams will keep you going on the water.

Features:

  • Extremely wide powerband helps get boat on plane while making maximum horsepower
  • Work against exhaust systems with restrictive back pressure
  • Power enhancement helps maintain top end speed for long distances
  • Intended for applications where low idle speeds are required
Show More

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.

Part TypeCamshaft
Product LineComp Cams Marine Mechanical Roller Camshafts
BrandCOMP CAMS
Package Height2.8
Package Width3.0
Package Length24.2
Weight14.45 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)280
Cam StyleMechanical roller tappet
Grind Number310AR-8
Exh. Duration Advertised (Deg)310
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.772
Int. Duration @ .050 In. (Deg)280
Basic Operating Rpm Range5,000-7,500
Intake Valve Lash0.028 in (0.711 mm)
Intake Valve Lift0.772 in (19.609 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)310
Lobe Separation (Deg)108
Rpm Range5000-7500
Advertised Duration310 int./310 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.772
UsageMarine
Valve Lift With Factory Rocker Arm Ratio0.772 int./0.772 exh.
Camshaft Gear Attachment3-bolt
QuantitySold individually
Exhaust Valve Lash0.03 in (0.762 mm)
Exhaust Valve Lift0.772 in (19.609 mm)
Advertised Intake Duration310
Intake Duration At 050 Inch Lift280
Exhaust Duration At 050 Inch Lift280
Advertised Exhaust Duration310
Lifter TypeMechanical Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift280 int./280 exh.
Valve Springs RequiredYes
Vendor Part Number11-745-9
Package Qty1
Package TypeEA
No Questions
No Reviews

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Dual Valve Springs Outer Spring O.D.: 1.638 in.

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