MOTOWN 23°

SMALL BLOCK CHEVROLET

ALUMINUM CLYINDER HEADS

BRAND NEW WORLD MOTOWN ALUMINUM SBC HEADS!!! Two brand-new designs in World’s arsenal of SBC replacement heads. The first is the World 215 cc runner fast-burn, Vortec-style head. Designed to combine the best features of high velocity and a quick-burn style chamber. It has 2.08 and 1.60 valves, interlocking valve seats, and a 23° valve angle. It can accommodate springs up to 1.550 in diameter and is available with 64cc chambers. It does not require offset rockers and is cast of  rugged 355-T6 aluminum. It’s an excellent replacement for Vortec-style applications. This is a perfect head for serious street performance.

The new leader in SBC performance heads, the World 235, 23° head was created for big flow for big-inch small blocks! Huge 2.100 and 1.625 valves combine with free-flowing 235 cc port runners for incredible air movement. Cast from 355-T6 aluminum and available in 64cc chambers. Requires offset  intake rockers to allow usage of longer valves while maintaining rocker ratio. The perfect compliment for applications like World’s 454 Motown SBC.
Tech Specs | Instruction Sheet
Motown 23° Aluminum SBC Cylinder Heads (Angle Plug)
Part # Application Description Valve Type Plug Spring Specs Max Lift Chamber
024015 Bare Head 215 cc Runner None Angle None N/A 64 cc
024015-1 Hydraulic 215 cc Runner Manley Racemaster Angle 1.250" Single .560" 64 cc
024015-2 Mech./Hydraulic Roller 215 cc Runner Manley Racemaster Angle 1.437" Dual .600" 64 cc
024015-3 Solid Roller 215 cc Runner Manley Severe Duty Angle 1.550" Dual .700" 64 cc
024020 Bare Head 235 cc Runner None Angle None N/A 64 cc
024020-2 Mech./Hydraulic Roller 235 cc Runner Manley Racemaster Angle 1.437" Dual .600" 64 cc
024020-3 Solid Roller 235 cc Runner Manley Severe Duty Angle 1.550" Dual .700" 64 cc