Ford Racing M-6250-X303 X303 Hydraulic Roller Camshaft for 5.0L Small Block V8

The legendary Ford Racing X303 hydraulic roller camshaft (M-6250-X303) is engineered to deliver significant power improvements for 5.0L Fox Body Mustangs and small block V8 engines. This performance cam produces excellent torque and horsepower gains throughout the RPM range, with peak power up to 6,200 RPM, while delivering the classic aggressive idle and exhaust note enthusiasts demand.

Technical Specifications:

• Advertised Duration: 286° intake / 286° exhaust
• Duration at 0.050" Lift: 224° intake / 224° exhaust
• Valve Lift: 0.542" intake / 0.542" exhaust (with factory 1.6 rocker ratio)
• Lobe Separation Angle: 112 degrees
• Operating RPM Range: 2,200 to 6,200 RPM
• Hydraulic roller tappet design

Key Features:

• Provides noticeable power improvement with signature lumpy idle
• Works with carburetors or mass air fuel injection systems
• Fits 1985 and later 302 roller cam blocks
• Compatible with 1994-1997 351W with factory roller cam when used with mass air EFI
• Can be retrofitted to 1963-1984 non-roller 289/302 blocks with hydraulic roller lifters
• Excellent for supercharged applications

Important Installation Notes:

• Upgraded valve springs required (minimum 120 lbs seat pressure, 295 lbs open)
• Manual transmission recommended for best performance
• High-stall torque converter required for automatic transmission applications
• Only compatible with mass air induction systems on EFI engines
• Will not work with Speed Density or Explorer EEC-V EFI systems
• Piston-to-valve clearance and pushrod length must be checked before installation
• May require piston modification or longer pushrods for proper clearance
• Computer chip modification may be required

Perfect for street/strip applications, the X303 cam transforms your small block Ford V8 into a high-performance powerplant with aggressive sound and proven power gains. Sold individually.