Built on Ford Racing’s new BOSS 351 block, the X head 427 crate engine is engineered and built to deliver a strong and flat torque curve.That translates into tire-smoking acceleration for street rods, kit cars andmuscle cars. It also delivers power and torque for light duty pickups and SUVs.

• 450 hp @ 5600 rpm
• 520 lb-ft torque @ 4500 rpm
• 351-based small block Ford engine
• Displacement 427 cu. in.
• 4.125" bore x 4.00" stroke
• BOSS 351 9.5" deck block
• SCAT® forged steel crankshaf
• SCAT® forged steel I-beam connecting rods
• Forged Mahle® pistons w/floating wrist pin
• Hydraulic roller camshaft
• .580"/.602" camshaft lift
• Camshaft duration 232°/240° @ .050"
• Ford Racing Aluminum 64cc Chamber Cylinder Heads M-6049-X306
• 1.94" intake valves and 1.54" exhaust valves
• 10.5:1 compression ratio
• 1.60:1 ratio roller rocker arms
• Ford Racing cast aluminum black wrinkle finish 427 Cobra scriptvalve covers M-6582-W427B
• Steel 7-quart oil pan with windage tray and scraper
• Long-type standard rotation water pump included
• Distributor not included. MSD distributor #85840 recommended (distributor modifications necessary for intake clearance)
• Unleaded premium fuel required
• Maximum recommended rpm: 5600 rpm
• Internal balanced. Use neutral balance flywheel
• New block, oil and water pumps, performance oil pan and high-performance harmonic balancer
• Can be used in kit cars, street rods, Mustangs, Fox-bodied cars and trucks