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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-K42-224-4
Xtreme Energy 274H Hydraulic Flat Tappet Camshaft Complete Kit Lift .520"/.523" Duration 274°/286° RPM Range 1800-6000
$66895
Ships on 09/15/2026
Lowest Price GuaranteeOldsmobile 260-455 c.i. 8 cyl. 1967-1990
- Xtreme Energy 274H Hydraulic Flat Tappet Camshaft Complete Kit
- Produces Better Throttle Response
- Produces Top Engine Horsepower
- Delivers Increased Engine Vacuum
- 1 Year Limited Warranty
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
High performance street, very strong mid-range. Needs headers and 2200+ stall.
Lift .520"/.523"
Duration 274°/286°
RPM Range 1800-6000
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 Height5.2
Package Width10.5
Package Length25.4
Weight25.1 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)236
Cam StyleHydraulic flat tappet
Grind NumberOL XE274H-10
Exh. Duration Advertised (Deg)286
Locks IncludedYes
Engine Make/SizeOlds 260-455
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.52
Int. Duration @ .050 In. (Deg)230
Assembly Lubricant IncludedYes
Basic Operating Rpm Range1,800-6,000
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.52 in (13.208 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)274
Lobe Separation (Deg)110
Rpm Range1800-6000
Lifter StyleHydraulic flat tappet
Advertised Duration274 int./286 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.523
Valve Springs IncludedYes
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.520 int./0.523 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lift0.523 in (13.284 mm)
Advertised Intake Duration274
Outside Diameter Of Outer Spring1.437 in (36.5 mm)
Intake Duration At 050 Inch Lift230
Exhaust Duration At 050 Inch Lift236
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration286
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift230 int./236 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberK42-224-4
Package Qty1
Package TypeEA
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