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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-653-47
Xtreme Energy Mechanical Flat Camshaft 4 & 7 Swap
$37695
Ships on 09/10/2026
Lowest Price GuaranteeChevy Big Block 396-454ci 1965-964 & 7 Swap Firing Order
- Xtreme Energy Mechanical Flat Camshaft
- 4 & 7 Swap
- Lift: .568"/.578"
- Duration: 274°/280°
- Lobe Separation Angle: 110°
- RPM Range 2000-6400
Solid-Very strong mid-range torque and throttle response, 2500+ stall.Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Very strong mid-range torque and throttle response, 2500+ stall.
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 Height2.8
Package Width2.9
Package Length24.2
Weight10.55 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)242
Cam StyleMechanical flat tappet
Grind NumberXE274S
Exh. Duration Advertised (Deg)280
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.568
Int. Duration @ .050 In. (Deg)236
Basic Operating Rpm Range2,000-6,400
Intake Valve Lash0.016 in (0.406 mm)
Intake Valve Lift0.568 in (14.427 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)274
Lobe Separation (Deg)110
Rpm Range2000-6400
Advertised Duration274 int./280 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.578
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.568 int./0.578 exh.
QuantitySold individually
Exhaust Valve Lash0.016 in (0.406 mm)
Exhaust Valve Lift0.578 in (14.681 mm)
Advertised Intake Duration274
Intake Duration At 050 Inch Lift236
Exhaust Duration At 050 Inch Lift242
Advertised Exhaust Duration280
Lifter TypeMechanical Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift236 int./242 exh.
Valve Springs RequiredYes
Vendor Part Number11-653-47
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
