World Products Motown 220 Iron Cylinder Heads

World Products Motown 220 clearly rates as the ultimate small block cast iron head. It features the latest high tech 64cc chambers and RightCast® 220cc runners to produce a combination of excellent flow and high velocity. With high-flow ports and standard intake valves, Motown 220 heads are the ideal complement to large displacement Small Blocks (383 ci and larger).

Available bare or in complete assemblies, with angle plug configurations. Bare version is sold each. Flat, Street and Race sold as a pair.

Item Details

Parts selection and machine work for Assembled head are done by Speedway Motors Racing Engines.

• Material: High density cast iron
• Valve Seats: Intake (integral), exhaust (hardened)
• Valve Guides: Integral cast iron
• Spring Seats: Machined for 1.560" and 1.250"
• Valves: Manley stainless steel valves in assemblies
• Valve Diameter: 2.080"" intake, 1.600" exhaust (11/32" stem)
• Guide Plates: Stock
• Rocker Arm Studs: Screw-in style
• Rocker Arms: 1.5 ratio (use of 1.6 ratio will require elongation of pushrod holes)
• Intake Runner: 220cc, standard port location
• Exhaust Ports: 70cc, standard location
• Combustion Chamber: 64cc, straight or angled plug orientation
• Spark Plug: 14mm 5/8" .460" reach tapered style. Accel 276 or 276S or equivalent
• Valve Job: Multi-angle intake and radiused exhaust
• Valve Cover Rail: Raised w/ perimeter and center bolt pattern
• Valve Angle: Stock 23°
• Accessory Bolt Holes: Stock Accepted by many oval tracks and sanctions. Check with rule book.
• Head flow @ .700 LIFT
• 273 intake, 192 exhaust (Super Flow 1050)
• 290 intake, 210 exhaust (Super Flow 600)
• All heads flowed with a standard .750" intake plate, without exhaust tube, and 28" of water.

Cylinder Head Chart (GIF)

• Material: High density cast iron
• Valve Seats: Intake (integral), exhaust (hardened)
• Valve Guides: Integral cast iron
• Spring Seats: Machined for 1.560" and 1.250"
• Valves: Manley stainless steel valves in assemblies
• Valve Diameter: 2.080"" intake, 1.600" exhaust (11/32" stem)
• Guide Plates: Stock
• Rocker Arm Studs: Screw-in style
• Rocker Arms: 1.5 ratio (use of 1.6 ratio will require elongation of pushrod holes)
• Intake Runner: 220cc, standard port location
• Exhaust Ports: 70cc, standard location
• Combustion Chamber: 64cc, straight or angled plug orientation
• Spark Plug: 14mm 5/8" .460" reach tapered style. Accel 276 or 276S or equivalent
• Valve Job: Multi-angle intake and radiused exhaust
• Valve Cover Rail: Raised w/ perimeter and center bolt pattern
• Valve Angle: Stock 23°
• Accessory Bolt Holes: Stock Accepted by many oval tracks and sanctions. Check with rule book.
• Head flow @ .700 LIFT
• 273 intake, 192 exhaust (Super Flow 1050)
• 290 intake, 210 exhaust (Super Flow 600)
• All heads flowed with a standard .750" intake plate, without exhaust tube, and 28" of water.