COMP Cams Magnum/Drag Race 253/253 Hydraulic Flat Cam for Pontiac 265-455 51-241-4

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Specifications:

BrandCOMP Cams
Part Number51-241-4
GTIN00036584612087
Camshaft Gear Attachment1
Lifter TypeHydraulic Flat Tappet
Grind Number305h-10
Exhaust Valve Lift0.525 in
Intake Valve Lift0.525 in
Valve Springs RequiredYes
Exhaust Duration At .050 Inch Lift253 dd
Intake Duration At .050 Inch Lift253 dd
Advertised Exhaust Duration305 dd
Advertised Intake Duration305 dd
Cam TypeHydraulic Flat Tappet
Lobe Separation110 dd
Assembly Lubricant IncludedYes
Basic Operating Rpm Range3,000-6500
C.a.r.b. Exempt For California Certified Vehicles Manufactured Before 1965?Yes, But Must Meet Tailpipe Emission Standards For Year Of Vehicle.
C.a.r.b. Exempt For Federally Certified Vehicles Manufactured Before 1967?Yes, But Must Meet Tailpipe Emission Standards For Year Of Vehicle.
C.a.r.b. Exempt For Foreign Vehicles Manufactured Before 1967?Yes, But Must Meet Tailpipe Emission Standards For Year Of Vehicle.
C.a.r.b. Exempt For On-road Vehicles?No
C.a.r.b. Exempt For Racing And Off-road Only Vehicles?Yes, But Must Be A Race/competition Only Vehicle.
Cam And Lifter Kit UpgradeCl51-241-4
Camshaft MaterialCast Iron
Camshaft SeriesMagnum
Engine FamilyPontiac 265-455 C.i. 8 Cylinder (1955-1981)
K-kit UpgradeK51-241-4
Lifters IncludedNo
Sk-kit UpgradeSk51-241-4
UsageStreet/strip

Hydraulic: Racy idle. Bracket racing cam. Needs 10.5:1 compression and 3500 stall. Low Gear ratio.