High Energy 252H Hydraulic Flat Tappet Camshaft Lift: .425" /.425" Duration: 252°/525° RPM Range: 800-4800
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-51-229-3

High Energy 252H Hydraulic Flat Tappet Camshaft Lift: .425" /.425" Duration: 252°/525° RPM Range: 800-4800

$29795
1 left in stock
ShippingShips on Sep 14, 2026
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Pontiac 265-455ci V-8 1955-81
    High Energy 252H Hydraulic Flat Tappet Camshaft
    Lift: .425''/.425"
    Duration: 252°/525°
    RPM Range: 800-4800


    Operating Range:800-4800 RPM
    Duration Advertised:252° Intake / 252° Exhaust
    Duration @ .050' Lift:206° Intake / 206° Exhaust
    Valve Lift w/1.5 Rockers:.425' Intake / .425' 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;


    Smooth idle with fuel economy for 326 to 400c.i. Strong torque. Best cam for 301.

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
BrandCOMP CAMS
Package Height2.7
Package Width3.0
Package Length24.3
Weight9.51 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)206
Cam StyleHydraulic flat tappet
Grind Number252H
Exh. Duration Advertised (Deg)252
Engine Make/SizePontiac 265-455
Intake Valve Lift With Factory Rocker Arm Ratio (I0.425
Int. Duration @ .050 In. (Deg)206
Basic Operating Rpm Range800-4,800
Intake Valve Lift0.425 in (10.795 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)252
Lobe Separation (Deg)110
Rpm Range800-4800
Advertised Duration252 int./252 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.425
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.425 int./0.425 exh.
QuantitySold individually
Exhaust Valve Lift0.425 in (10.795 mm)
Advertised Intake Duration252
Intake Duration At 050 Inch Lift206
Exhaust Duration At 050 Inch Lift206
Advertised Exhaust Duration252
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift206 int./206 exh.
Valve Springs RequiredNo
Vendor Part Number51-229-3
Package Qty1
Package TypeEA
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