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Comp Cams Marine Mechanical Roller Camshafts
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-11-702-9

Comp Cams Marine Mechanical Roller Camshafts

$51695
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: .680"/.680"
    Duration: 306°/319°
    Lobe Separation Angle: 110°
    RPM Range: 4500-7000

    Hydro, flat bottom, jet boat with B impeller. Bracket Racing. Easy on parts.

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


    Use in 454c.i. or larger engines. 11.5:1+ compression. Hydro, flat bottom jet boat with B impeller. Bracket racing. Easy on parts.

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
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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
Weight10.6 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)282
Cam StyleMechanical roller tappet
Grind NumberCB 306A-R10
Exh. Duration Advertised (Deg)319
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.68
Int. Duration @ .050 In. (Deg)271
Basic Operating Rpm Range4,200-7,200
Intake Valve Lash0.028 in (0.711 mm)
Intake Valve Lift0.68 in (17.272 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)306
Lobe Separation (Deg)110
Rpm Range4500-7000
Advertised Duration306 int./319 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.68
UsageMarine
Valve Lift With Factory Rocker Arm Ratio0.680 int./0.680 exh.
Camshaft Gear Attachment3-bolt
QuantitySold individually
Exhaust Valve Lash0.03 in (0.762 mm)
Exhaust Valve Lift0.68 in (17.272 mm)
Advertised Intake Duration306
Intake Duration At 050 Inch Lift271
Exhaust Duration At 050 Inch Lift282
Advertised Exhaust Duration319
Lifter TypeMechanical Roller
Duration At 050 Inch Lift271 int./282 exh.
Valve Springs RequiredYes
Vendor Part Number11-702-9
Package Qty1
Package TypeEA
No Questions
No Reviews

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159 Engine Break-In Oil Additive [12-Ounce]

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Adjustable Timing Set Big Block Chevy 396-454ci (w/Thrust Bearing)

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Stud Girdle Big Block Chevy 396-454

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Bronze Distributor Gear Chevy V6 90° 200-262, V8 265-400, V8 396-454

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Positive Stop PTFE Seals Guide Size: .530"

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Super Valve Locks Angle: 10°

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Super Valve Locks Angle: 10°

Part Number : 249-612-16
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Hi-Tech Belt Drive System Big Block Chevy 396-454ci

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Hi-Tech Belt Drive System Big Block Chevy 396-454ci

Part Number : 249-6200
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Hardened Lash Cap Thickness .080"

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Hardened Lash Cap Thickness .080"

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10° Titanium Retainers Valve Spring Diameter: 1.500"-1.550"

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10° Titanium Retainers Valve Spring Diameter: 1.500"-1.550"

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Endure-X Solid/Mechanical Roller Lifter Set Diameter: 842"

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Endure-X Solid/Mechanical Roller Lifter Set Diameter: 842"

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Endure-X Solid/Mechanical Roller Lifter Set 300" taller Height

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Dual Valve Springs Outer Spring O.D.: 1.585 in.

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Dual Valve Springs Outer Spring O.D.: 1.585 in.

Part Number : 249-944-16
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Some parts are not legal for use in California or other states with similar laws / regulations
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