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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-23-708-9
Drag Race Mechanical Roller Camshaft Lift .660"/.663" Duration 316/321 RPM Range 4800-7200
$62295
Ships on 09/14/2026
Lowest Price GuaranteeChrysler 383-440 C.I. 8 CYL. 1959-1980
- Drag Race Mechanical Roller Camshaft
Lift .660"/.663"
Duration 316/321
RPM Range 4800-7200
Mechanical Roller-Fast bracket, Super Gas or Super Comp. Best with 12.5:1 comp and ported iron or aftermarket heads. 5500 stall in 440.
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
Fast Bracket, Super Gas or Super Comp. Best with 12.5:1 compression and ported iron or aftermarket heads. 5500+ stall in 440.
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 Height2.8
Package Width3.1
Package Length24.3
Weight9.15 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)288
Cam StyleMechanical roller tappet
Grind NumberCRB3 RX316-R8
Exh. Duration Advertised (Deg)321
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.66
Int. Duration @ .050 In. (Deg)283
Basic Operating Rpm Range4,800-7,200
Intake Valve Lash0.026 in (0.66 mm)
Intake Valve Lift0.66 in (16.764 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)316
Lobe Separation (Deg)108
Rpm Range4800-7200
Advertised Duration316 int./321 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.663
UsageStrip
Valve Lift With Factory Rocker Arm Ratio0.660 int./0.663 exh.
Camshaft Gear Attachment3-bolt
QuantitySold individually
Exhaust Valve Lash0.028 in (0.711 mm)
Exhaust Valve Lift0.663 in (16.84 mm)
Advertised Intake Duration316
Intake Duration At 050 Inch Lift283
Exhaust Duration At 050 Inch Lift288
Advertised Exhaust Duration321
Lifter TypeMechanical Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift283 int./289 exh.
Valve Springs RequiredYes
Vendor Part Number23-708-9
Package Qty1
Package TypeEA
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