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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-217-4
Comp Cams Magnum Mechanical Flat Tappet Camshafts
$30995
Ships on 09/09/2026
Lowest Price GuaranteeChevy 396-454ci Big Block 1965-96
- Magnum 270S Mechanical Flat Tappet Camshaft
Lift: .530"/.530"
Duration: 270°/270°
Lobe Separation Angle: 110°
RPM Range: 1800-5800
Good for everyday driving. Works well with headers. In 396-402 use slightly lower gears. Slightly rough idle.
| Operating Range: | 1800-5800 RPM |
| Duration Advertised: | 270° Intake / 270° Exhaust |
| Duration @ .050' Lift: | 224° Intake / 224° Exhaust |
| Valve Lift: | .530' Intake / .530' Exhaust |
| Valve Setting: | .022' Intake / .022' Exhaust |
| Lobe Separation Angle: | 110° |
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Good for everyday driving. Works well with headers. In 396-402c.i. use slightly lower gears. Slightly rough idle.
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.
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Part TypeCamshaft
BrandCOMP CAMS
Package Height2.75
Package Width2.87
Package Length24.5
Weight10.7 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)224
Cam StyleMechanical flat tappet
Grind NumberCB 270S-10
Exh. Duration Advertised (Deg)270
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.53
Int. Duration @ .050 In. (Deg)224
Basic Operating Rpm Range1,800-5,800
Intake Valve Lash0.022 in (0.559 mm)
Intake Valve Lift0.53 in (13.462 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)270
Lobe Separation (Deg)110
Rpm Range1800-5800
Advertised Duration270 int./270 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.53
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.530 int./0.530 exh.
QuantitySold individually
Exhaust Valve Lash0.022 in (0.559 mm)
Exhaust Valve Lift0.53 in (13.462 mm)
Advertised Intake Duration270
Intake Duration At 050 Inch Lift224
Exhaust Duration At 050 Inch Lift224
Advertised Exhaust Duration270
Lifter TypeMechanical Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift224 int./224 exh.
Valve Springs RequiredYes
Vendor Part Number11-217-4
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
