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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-21-231-4
Xtreme Energy Mechanical Flat Camshaft Lift: .502"/.511"
$30995
Ships on 10/19/2026
Lowest Price GuaranteeChrysler 383-440 C.I. 8 CYL. 1959-1980
Single Bolt
Single Bolt
- Xtreme Energy Mechanical Flat Camshaft
- Lift: .502"/.511"
- Duration: 274°/280°
- Lobe Separation Angle: 110°
- RPM Range 2200-6200
Solid-Serious street/strip 9.5:1 compression with 2800 + stall Strong mid-range273, 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
Serious street/strip, 9.5:1 compression with 2800+ stall. Strong mid-range.
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
Weight9.85 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)252
Cam StyleMechanical flat tappet
Grind NumberCRB XE274S-10
Exh. Duration Advertised (Deg)244
Engine Make/SizeMopar 273-360
Intake Valve Lift With Factory Rocker Arm Ratio (I0.502
Int. Duration @ .050 In. (Deg)244
Basic Operating Rpm Range2,200-6,200
Intake Valve Lash0.016 in (0.406 mm)
Intake Valve Lift0.52 in (13.208 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)282
Lobe Separation (Deg)110
Rpm Range2200-6200
Advertised Duration274 int./280 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.511
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.502 int./0.511 exh.
Camshaft Gear Attachment1-bolt
QuantitySold individually
Exhaust Valve Lash0.018 in (0.457 mm)
Exhaust Valve Lift0.54 in (13.716 mm)
Advertised Intake Duration274
Intake Duration At 050 Inch Lift236
Exhaust Duration At 050 Inch Lift242
Advertised Exhaust Duration280
Lifter TypeMechanical Flat Tappet
Duration At 050 Inch Lift236 int./242 exh.
Valve Springs RequiredYes
Vendor Part Number21-231-4
Package Qty1
Package TypeEA
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