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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-683-47
Drag Race Mechanical Flat Tappet Camshaft 4 & 7 Swap Big Block Chevy 396-454 1965-96 Lift: .638"/.638"
$37695
Ships on 10/23/2026
Lowest Price GuaranteeChevy Big Block 396-454 1965-96
- Drag Race Mechanical Flat Tappet Camshaft
- Lift: .638"/.638"
- Duration: 310°/320°
- Lobe Separation Angle: 110°
- RPM Range: 4500-7500
- Drag Race Xtreme RX Camshaft
- 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
Our best solid for 454c.i. with 4500+ stall and 11.5:1+ compression.
4 & 7 Swap
Big Block Chevy 396-454 1965-96
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 Length24.3
Weight10.35 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)280
Cam StyleMechanical flat tappet
Grind Number47S 310C-10
Exh. Duration Advertised (Deg)320
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.638
Int. Duration @ .050 In. (Deg)270
Basic Operating Rpm Range4,500-7,500
Intake Valve Lash0.028 in (0.711 mm)
Intake Valve Lift0.638 in (16.205 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)310
Lobe Separation (Deg)108
Rpm Range4500-7500
Advertised Duration310 int./320 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.638
UsageStrip
Valve Lift With Factory Rocker Arm Ratio0.638 int./0.638 exh.
QuantitySold individually
Exhaust Valve Lash0.03 in (0.762 mm)
Exhaust Valve Lift0.638 in (16.205 mm)
Advertised Intake Duration310
Intake Duration At 050 Inch Lift270
Exhaust Duration At 050 Inch Lift280
Advertised Exhaust Duration320
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift270 int./280 exh.
Valve Springs RequiredYes
Vendor Part Number11-683-47
Package Qty1
Package TypeEA
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