
COMP CAMSPART NUMBER: 249-CL51-224-4
Xtreme Energy 274H Hydraulic Flat Tappet Camshaft & Lifter Kit Lift: .488" /.491" Duration: 274°/286° RPM Range: 1800-6000
$39795
4 left in stockPontiac 265-455ci V-8 1955-81
- Xtreme Energy 274H Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift: .488''/.491''
Duration: 274°/286°
RPM Range: 1800-6000
High performance street, very strong mid-range, headers and 2000-stall converter.
| Operating Range: | 1800-6000 RPM |
| Duration Advertised: | 274° Intake / 286° Exhaust |
| Duration @ .050' Lift: | 230° Intake / 236° Exhaust |
| Valve Lift w/1.5 Rockers: | .488' Intake / .491' Exhaust |
| Lobe Separation Angle: | 110° |
Pontiac; Super Duty; SD; SD455; HO; 455 HO; Trans-Am; Catalina; Firebird; Formula; 421; 455; 400; 428; 350; 265; 301; 370; 389; 301; 287; 317; 347; Ram Air; Ram Air IV; Ram Air III; Bonneville; Grand Prix; LeMans; Parisienne; Grand Am; Century; Regal;
High performance street, very strong mid-range, headers and 2200+ stall.
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 Height3.1
Package Width5.5
Package Length25.2
Weight13.75 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)236
Cam StyleHydraulic flat tappet
Grind NumberP XE274H-10
Exh. Duration Advertised (Deg)286
Locks IncludedNo
Engine Make/SizePontiac 265-455
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.488
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 Lift0.488 in (12.395 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 (0.491
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.488 int./0.491 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.491 in (12.471 mm)
Advertised Intake Duration274
Intake Duration At 050 Inch Lift230
Exhaust Duration At 050 Inch Lift236
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration286
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift230 int./236 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL51-224-4
Package Qty1
Package TypeEA
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