World Products has developed a refined version of its popular MOTOWN block in the form of the MOTOWN II, and now offers it in over two dozen iterations for small block Chevrolet applications. The MOTOWN II boasts 152 fluid ounces of coolant per side and has demonstrated stability lauded by racers and professional engine builders alike. A MOTOWN block won the inaugural Engine Masters Challenge and it was worth about 20 horsepower over others, thanks to its outstanding design and overall stability.
TECHNICAL SPECS:
Material: High Density IronDeck Height: 9.025" (standard Chevrolet)Deck Thickness: .600" minimum Cam Bearings: Standard Chevrolet small block setMain Bearings: Standard Chevrolet (350 style)Camshaft Location: StockLifter Bores: Indexed (stock .843" bore)Bore: 3.990" (hone to 4.000") or 4.115" (hone to 4.125")Maximum Bore: 4.200"Cylinder Wall Thickness: Approx. .250" @ 4.200" boreWater Jackets: Expanded for better coolingLubrication: Priority main oiling systemOil System Features: Integral boss for front feed, boss for rear scavenge rear main cap has provisions for wet sump pump, drilled for dry sump valley scavenge lines, cross-feed lines between left and right lifter oil galleysFiltration: Integral mount for spin-on filterOil Pan Rails: Solid (stock width) can be clearanced for strokersCrank Clearance: 4.000" stroke (H-beam steel rods) (sleeves may need notching)Main Caps: Splayed billet steelMounts: OEM starter and oil filter mountsBlock: Side ribs for extra strength & cooling - cross-ribs in valleyMotor Mounts: Dual (front and side)Cylinder Head Holes: Blind tapped to prevent leaksWeight: Approximately 200 lbs.