World Products SB-Chevy Motown 220 Lite Heads

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Affordable Aluminum High Performance Heads!

The Motown 220 Lite cylinder head from World Products is engineered for equal to or better power than many expensive competition designs, yet benefits from high volume CNC manufacturing to keep prices in line with street heads. Some of the features contributing to the effectiveness of the Motown 220 Lite include intake runners with an improved short turn, RightCast manufacturing technology for optimum port consistency and CNC-machined chambers. Cast from 355-T6 high density aluminum alloy for added durability, all machining operations are registered off the combustion chambers to assure proper centering over the cyclinder. The ultimate in quality is available in bare, or complete assemblies featuring Manley RaceMaster or Severe Duty stainless steel valves and other premium quality parts.

Technical Specifications

Material: 355-T6 alloy high density aluminum
Valve Seats: Steel intake, hardened steel exhaust
Valve Guides: Bronze
Valve Spring Seats: Machined for 1.550'' springs
Valve Size: 2.080'' x 1.600''
Rocker Arm Studs: 3/8'' (-2 Models) or 7/16'' (-3 Models) screw-in style with hex shoulder
Rocker Arm Requirements: .150'' offset intake rocker required
Accessory Flange: Stock locations, 7-bolt universal pattern

Included In Assembly: Manley RaceMaster (-2 models) or Severe Duty (-3 models) 1-piece forged stainless steel valves with swirl-polished heads, ring and band (-2 models) or PC (-3 models) style seals, 1.440'' (-2 models) or 1.550'' (-3 models) valve springs, Manley 7° (-2 models) or 10° (-3 models) chrome moly retainers, keepers and pushrod guide plates.

Recommended Installation Items
Head Gaskets: Fel-Pro 375-1014 or equivalent
Pushrods: Requires heat-treated pushrods
Spark Plugs: Accepts 14mm .750'' reach gasketed 5/8'' hex (NGK 7496 or 4930) or equivalent
Intake Gasket: Fel-Pro 375-1205 or equivalent
Exhaust Gasket: Fel-Pro 375-1404 or equivalent

Machine Shop Specifications
Maximum Valve Diameter: 2.125'' x 1.600'' or 2.080'' x 1.625''
Maximum Spring Seat Depth (from inside step): .030''
Maximum Spring Diameter: 1.550''
Approximate Milling Guideline (varies with depth): .0065'' per cc
Maximum Flat Mill Depth (up to intake seats): .040''
Maximum Angle Mill (approx. 50-52cc volume): .175'' depth
Note: These specifications are for reference only. ALWAYS measure before machining.