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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-20-717-9
Drag Race Mechanical Roller Camshaft Lift .658"/.661" Duration 308/317 RPM Range 4800-7800
$55895
Ships on 10/22/2026
Lowest Price GuaranteeChrysler 273-360 C.I. 8 CYL. 1964-2000
- Drag Race Mechanical Roller Camshaft
Lift .658"/.661"
Duration 308/317
RPM Range 4800-7800
Mechanical Roller-Good Super Gas or fast bracket cam 12:1 compression with 5500+ stall.
273, 360, 318, AMC, Dodge, Mopar, Plymouth, Dart, Road Runner, Charger, Challenger, 383, 400, 440, 426, HEMI, 426 Wedge, 426 HEMI, RB, B, HEMI, 392, Chrysler, LA
Good Super Gas or Fast Bracket cam. 12:1 compression with 5500+ 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 Height2.9
Package Width3.0
Package Length24.4
Weight8.95 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)284
Cam StyleMechanical roller tappet
Grind NumberRX308R-8
Exh. Duration Advertised (Deg)317
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.658
Int. Duration @ .050 In. (Deg)275
Basic Operating Rpm Range4,800-7,800
Intake Valve Lash0.026 in (0.66 mm)
Intake Valve Lift0.658 in (16.713 mm)
Computer-Controlled CompatibleYes
Int. Duration Advertised (Deg)308
Lobe Separation (Deg)108
Rpm Range4800-7800
Advertised Duration308 int./317 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.661
UsageStrip
Valve Lift With Factory Rocker Arm Ratio0.658 int./0.661 exh.
QuantitySold individually
Exhaust Valve Lash0.028 in (0.711 mm)
Exhaust Valve Lift0.661 in (16.789 mm)
Advertised Intake Duration308
Intake Duration At 050 Inch Lift275
Exhaust Duration At 050 Inch Lift284
Advertised Exhaust Duration317
Lifter TypeMechanical Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift275 int./284 exh.
Valve Springs RequiredYes
Vendor Part Number20-717-9
Package Qty1
Package TypeEA
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