Comp Cams 'Magnum' Mechanical Flat Tappet Camshafts

Vehicle Info Needed

COMP CAMSPART NUMBER: 249-K51-247-4

Comp Cams 'Magnum' Mechanical Flat Tappet Camshafts

Name: Comp Cams 'Magnum' Mechanical Flat Tappet Camshafts
Brand: COMP CAMS
SKU: 249-K51-247-4
Price: 679.95 USD
Availability: InStock

^$679⁹⁵

Ships on 09/10/2026

Lowest Price Guarantee

Pontiac 265-455ci 8-cyl. 1955-1981

.555"/.555"

306°/306°

110°

3000-6500

Cams Are Very Aggressive
Designed For Performance Oriented Vehicles
Deliver More Power Than Standard Camshafts
1 Year Limited Warranty
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;

Race idle, Pro Street. Needs 10.5:1+ compression and 3500+ stall. Limited street 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 Kit

BrandCOMP CAMS

Package Height5.0

Package Width10.0

Package Length25.5

Weight22.9 PG

Part CategoryPerformance Parts

Exh. Duration @ .050 In. (Deg)260

Cam StyleMechanical flat tappet

Grind Number306S

Exh. Duration Advertised (Deg)306

Locks IncludedYes

Engine Make/SizePontiac 265-455

Retainers IncludedYes

Intake Valve Lift With Factory Rocker Arm Ratio (I0.555

Int. Duration @ .050 In. (Deg)260

Assembly Lubricant IncludedYes

Basic Operating Rpm Range3,000-6,500

Pushrods IncludedNo

Gaskets IncludedNo

Intake Valve Lash0.022 in (0.559 mm)

Rocker Arms IncludedNo

Intake Valve Lift0.555 in (14.097 mm)

Computer-Controlled CompatibleNo

Int. Duration Advertised (Deg)306

Lobe Separation (Deg)110

Rpm Range3000-6500

Lifter StyleMechanical flat tappet

Advertised Duration306 int./306 exh.

Exhaust Valve Lift With Factory Rocker Arm Ratio (0.555

Valve Springs IncludedYes

UsageStreet/Strip

Valve Lift With Factory Rocker Arm Ratio0.555 int./0.555 exh.

QuantitySold as a kit

Valve Stem Seals IncludedYes

Exhaust Valve Lash0.022 in (0.559 mm)

Exhaust Valve Lift0.555 in (14.097 mm)

Advertised Intake Duration306

Outside Diameter Of Outer Spring1.437 in (36.5 mm)

Intake Duration At 050 Inch Lift260

Exhaust Duration At 050 Inch Lift260

Timing Chain StyleDouble non-roller

Timing Chain And Gears IncludedYes

Advertised Exhaust Duration306

Lifter TypeMechanical Flat Tappet

Duration At 050 Inch Lift260 int./260 exh.

Valve Springs RequiredNo

Lifters IncludedYes

Vendor Part NumberK51-247-4

Package Qty1

Package TypeEA

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