Magnum 270H Hydraulic Flat Tappet Camshaft Lift: .476" /.476" Duration: 270°/270° RPM Range: 1800-5800
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-51-233-4

Magnum 270H Hydraulic Flat Tappet Camshaft Lift: .476" /.476" Duration: 270°/270° RPM Range: 1800-5800

$30995
ShippingShips on Sep 15, 2026
Lowest PriceLowest Price Guarantee

Pontiac 265-455ci V-8 1955-81
    Magnum 270H Hydraulic Flat Tappet Camshaft
    Lift: .476''/.476"
    Duration: 270°/270°
    RPM Range: 1800-5800


    Fair idle, good mid-range torque. Can use stock torque converter. Daily performance use.

    Operating Range:1800-5800 RPM
    Duration Advertised:270° Intake / 270° Exhaust
    Duration @ .050' Lift:224° Intake / 224° Exhaust
    Valve Lift w/1.5 Rockers:.476' Intake / .476' 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;


    Fair idle, good mid-range torque. Can use stock torque converter, best with 2000+ stall. Daily performance use.

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 Height2.75
Package Width2.87
Package Length24.5
Weight10.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)224
Cam StyleHydraulic flat tappet
Grind NumberP 270H-10
Exh. Duration Advertised (Deg)270
Engine Make/SizePontiac 265-455
Intake Valve Lift With Factory Rocker Arm Ratio (I0.476
Int. Duration @ .050 In. (Deg)224
Basic Operating Rpm Range1,800-5,800
Intake Valve Lift0.476 in (12.09 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)270
Lobe Separation (Deg)110
Rpm Range1800-5800
Advertised Duration270 int./270 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.476
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.476 int./0.476 exh.
QuantitySold individually
Exhaust Valve Lift0.476 in (12.09 mm)
Advertised Intake Duration270
Intake Duration At 050 Inch Lift224
Exhaust Duration At 050 Inch Lift224
Advertised Exhaust Duration270
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift224 int./224 exh.
Valve Springs RequiredYes
Vendor Part Number51-233-4
Package Qty1
Package TypeEA
No Questions
No Reviews

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