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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-K11-220-4
Comp Cams 'Magnum' Mechanical Flat Tappet Camshafts
$71195
Ships on 10/19/2026
Lowest Price GuaranteeChevy 396-454ci Big Block 1965-96
- Magnum 306S Mechanical Flat Tappet Camshaft Complete Kit
- Cams Are Very Aggressive
- Designed For Performance Oriented Vehicles
- Deliver More Power Than Standard Camshafts
- 1 Year Limited Warranty
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Jet boat with B impeller. Bracket race, 10.5:1+ compression. Use tunnel ram. Great for Pro Street or bracket racing. 3500+ stall or 4 speed. 11:1+ compression, 4.10 or lower gear. Radical idle.
Lift: .629''/.629"
Duration: 306°/306°
Lobe Separation Angle: 110°
RPM Range: 3000-7000
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 Kit
BrandCOMP CAMS
Package Height5.0
Package Width11.5
Package Length25.0
Weight26.1 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)260
Cam StyleMechanical flat tappet
Grind NumberCB 306S-10
Exh. Duration Advertised (Deg)306
Locks IncludedYes
Engine Make/SizeChevy Big Block (396-454)
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.629
Int. Duration @ .050 In. (Deg)260
Assembly Lubricant IncludedYes
Basic Operating Rpm Range3,000-7,000
Pushrods IncludedNo
Gaskets IncludedNo
Intake Valve Lash0.022 in (0.559 mm)
Rocker Arms IncludedNo
Intake Valve Lift0.629 in (15.977 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)306
Lobe Separation (Deg)110
Rpm Range3000-7000
Lifter StyleMechanical flat tappet
Advertised Duration306 int./306 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.629
Valve Springs IncludedYes
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.629 int./0.629 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lash0.022 in (0.559 mm)
Exhaust Valve Lift0.629 in (15.977 mm)
Advertised Intake Duration306
Outside Diameter Of Outer Spring1.509 in (38.3 mm)
Intake Duration At 050 Inch Lift260
Exhaust Duration At 050 Inch Lift260
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration306
Lifter TypeMechanical Flat Tappet
Duration At 050 Inch Lift260 int./260 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberK11-220-4
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
