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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-CL11-772-8
Xtreme Energy Mechanical Roller Camshaft and Lifter Kit Big Block Chevy 1965-96 Lift: .653"/.660"
$1,22595
Ships on 10/23/2026
Lowest Price GuaranteeChevy 396-454ci Big Block 1965-96
- Xtreme Energy Mechanical Roller Camshaft and Lifter Kit
- Lift: .653"/.660"
- Duration: 286°/292°
- Lobe Separation Angle: 110°
- RPM Range: 3000-7000
*Note: In order to use these camshafts in 1965-66 396/427ci blocks, it is necessary to machine a 3/16' wide x 7/64' deep groove in the rear main journal of the cam to allow oil flow to the top of the engine.** Note: Requires thrust button & wear plate.
Good in weekend warrior with 3000+ stall converter. Needs good intake and exhaust with low gears.
Operating Range: 3000-7000 RPM Duration Advertised: 286° Intake / 292° Exhaust Duration @ .050' Lift: 248° Intake / 254° Exhaust Valve Lift w/1.7 Rockers: .653' Intake / .660' Exhaust Valve Setting: .016' Intake / .018' Exhaust Lobe Separation Angle: 110°
Big Block Chevy 1965-96
Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height3.5
Package Width9.0
Package Length25.5
Weight16.25 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)254
Cam StyleMechanical roller tappet
Grind NumberCB XR286 R-10
Exh. Duration Advertised (Deg)292
Locks IncludedNo
Engine Make/SizeChevy Big Block (396-502)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.653
Int. Duration @ .050 In. (Deg)248
Assembly Lubricant IncludedNo
Basic Operating Rpm Range3,000-7,000
Pushrods IncludedNo
Gaskets IncludedNo
Intake Valve Lash0.016 in (0.406 mm)
Rocker Arms IncludedNo
Intake Valve Lift0.653 in (16.586 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)286
Lobe Separation (Deg)110
Rpm Range3000-7000
Lifter StyleMechanical roller
Advertised Duration286 int./292 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.66
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.653 int./0.660 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lash0.018 in (0.457 mm)
Exhaust Valve Lift0.66 in (16.764 mm)
Advertised Intake Duration286
Intake Duration At 050 Inch Lift248
Exhaust Duration At 050 Inch Lift254
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration292
Lifter TypeMechanical Roller
Duration At 050 Inch Lift248 int./254 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL11-772-8
Package Qty1
Package TypeEA
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