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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-CL42-225-4
Xtreme Energy 284H Hydraulic Flat Tappet Camshaft & Lifter Kit Lift .541"/.544" Duration 284°/296° RPM Range 2300-6500
$39795
Ships on 09/15/2026
Lowest Price GuaranteeOldsmobile 260-455 c.i. 8 cyl. 1967-1990
- Xtreme Energy 284H Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift .541"/.544"
Duration 284°/296°
RPM Range 2300-6500
Hydraulic-Street / Strip, needs 9:1 comp. 2800+ stall, headers, gears, rough idle.
Olds; Oldsmobile; Cutlass; Cutlass Supreme; 98; Calais; Ciera; Custom Cruiser; Starfire; Firenza; 88; Rocket; Rocket 88; Vista Cruiser; Delta 88; 260; 442; 307; 350; 403; 400; 425; 455
Street/strip, needs 9:1+ compression. 2800+ stall, headers, gears, rough idle.
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 Height3.2
Package Width5.5
Package Length25.3
Weight14.55 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)246
Cam StyleHydraulic flat tappet
Grind NumberXE284H
Exh. Duration Advertised (Deg)296
Locks IncludedNo
Engine Make/SizeOlds 260-455
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.541
Int. Duration @ .050 In. (Deg)240
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,300-6,500
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.541 in (13.741 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)284
Lobe Separation (Deg)110
Rpm Range2300-6500
Lifter StyleHydraulic flat tappet
Advertised Duration284 int./296 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.544
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.541 int./0.544 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.544 in (13.818 mm)
Advertised Intake Duration284
Intake Duration At 050 Inch Lift240
Exhaust Duration At 050 Inch Lift246
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration296
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift240 int./246 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL42-225-4
Package Qty1
Package TypeEA
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