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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-51-659-5
Drag Race Mechanical Flat Tappet Camshaft Pontiac 265-455 1955-81 Lift: .540"/.540"
$32595
Ships on 10/23/2026
Lowest Price GuaranteePontiac 265-455ci 1955-81
- Drag Race Mechanical Flat Tappet Camshaft
- Lift: .540"/.540"
- Duration: 290°/304°
- Lobe Separation Angle: 106°
- RPM Range: 3500-6500
- Drag Race Xtreme RX Camshaft
- 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;
Super torque, 3500+ stall, works well in heavy car.
Pontiac 265-455 1955-81
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 Height2.9
Package Width2.9
Package Length24.3
Weight9.05 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)266
Cam StyleMechanical flat tappet
Grind Number290B-6
Exh. Duration Advertised (Deg)304-1
Engine Make/SizePontiac 265-455
Intake Valve Lift With Factory Rocker Arm Ratio (I0.54
Int. Duration @ .050 In. (Deg)255
Basic Operating Rpm Range3,500-6,500
Intake Valve Lash0.026 in (0.66 mm)
Intake Valve Lift0.594 in (15.088 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)290-1
Lobe Separation (Deg)106
Rpm Range3500-6500
Advertised Duration290 int./304 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.54
UsageStrip
Valve Lift With Factory Rocker Arm Ratio0.540 int./0.540 exh.
QuantitySold individually
Exhaust Valve Lash0.028 in (0.711 mm)
Exhaust Valve Lift0.587 in (14.91 mm)
Advertised Intake Duration290
Intake Duration At 050 Inch Lift255
Exhaust Duration At 050 Inch Lift266
Advertised Exhaust Duration304
Lifter TypeMechanical Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift255 int./266 exh.
Valve Springs RequiredYes
Vendor Part Number51-659-5
Package Qty1
Package TypeEA
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