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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-420-8
Magnum Hydraulic Roller Camshaft Chevy Big Block 396-454 Retro Fit Lift: .566"/.566"
$57795
Ships on Sep 15, 2026
Lowest Price GuaranteeChevy 396-454ci Big Block 1965-96Retro-Fit for Non Factory Roller
- Magnum Hydraulic Roller Camshaft
- Lift: .566"/.566"
- Duration: 270°/270°
- Lobe Separation Angle: 110°
- RPM Range: 1800-5000
- 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
Daily driven street machines. Works with stock converters. Likes headers. 396c.i. needs 3.55-3.73+ gear. Slightly rough idle.
Chevy Big Block 396-454 Retro Fit
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 Height2.6
Package Width2.8
Package Length24.5
Weight10.85 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)215
Cam StyleHydraulic roller tappet
Grind NumberCB 270H-R10
Exh. Duration Advertised (Deg)270
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.566
Int. Duration @ .050 In. (Deg)215
Basic Operating Rpm Range1,800-5,000
Intake Valve Lift0.566 in (14.376 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)270
Lobe Separation (Deg)110
Rpm Range1800-5000
Advertised Duration270 int./270 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.566
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.566 int./0.566 exh.
QuantitySold individually
Exhaust Valve Lift0.566 in (14.376 mm)
Advertised Intake Duration270
Intake Duration At 050 Inch Lift215
Exhaust Duration At 050 Inch Lift215
Advertised Exhaust Duration270
Lifter TypeHydraulic Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift215 int./215 exh.
Valve Springs RequiredYes
Vendor Part Number11-420-8
Package Qty1
Package TypeEA
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