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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-K08-407-8
Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts
$1,11095
Ships on 09/10/2026
Lowest Price GuaranteeChevy 305-350ci Small Block 1987-98
For engines originally equipped with a hydraulic roller camshaft, except LT1 and LT4.
For engines originally equipped with a hydraulic roller camshaft, except LT1 and LT4.
- Xtreme Energy XR252HR Hydraulic Roller Camshaft Complete Kit (CARBURETED)
- Produces Better Throttle Response
- Produces Top Engine Horsepower
- Delivers Increased Engine Vacuum
- 1 Year Limited Warranty
265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10
Good for towing, excellent mileage, smooth idle. Will work with stock converters and gears.
Lift: .472"/.480"
Duration: 252°/258°
Lobe Separation Angle: 110°
RPM Range: 600-4800
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 Kit
BrandCOMP CAMS
Package Height5.0
Package Width10.5
Package Length26.0
Weight30.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)206
Cam StyleHydraulic roller tappet
Grind NumberXR252HR
Exh. Duration Advertised (Deg)258
Locks IncludedYes
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.472
Int. Duration @ .050 In. (Deg)200
Assembly Lubricant IncludedNo
Basic Operating Rpm Range600-4,600
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.472 in (11.989 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)252
Lobe Separation (Deg)110
Rpm Range1000-5000
Lifter StyleHydraulic roller
Advertised Duration252 int./258 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.48
Valve Springs IncludedYes
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.472 int./0.480 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lift0.48 in (12.192 mm)
Advertised Intake Duration252
Outside Diameter Of Outer Spring1.254 in (31.9 mm)
Intake Duration At 050 Inch Lift200
Exhaust Duration At 050 Inch Lift206
Timing Chain StyleDouble roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration258
Lifter TypeHydraulic Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift200 int./206 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberK08-407-8
Package Qty1
Package TypeEA
No Questions
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Some parts are not legal for use in California or other states with similar laws / regulations
