World Products 084030 MOTOWN II Cast Iron Block SB Chevy

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 cast iron
Deck Height: 9.025" (standard Chevrolet)
Deck Thickness: .600" minimum 
Cam Bearings: Std Chevrolet small block set
• Can be machined for 55 mil.
Main Bearings: Std Chevrolet (400 style)
Camshaft Location: Stock
Lifter Bores: Indexed (stock .843" bore)
Bore: 3.990" (hone to 4.000") or 4.115" (hone to 4.125")
Maximum Bore: 4.200" DO NOT EXCEED 
Cylinder Wall Thickness: .250" @ 4.200" bore
Water Jackets: Expanded for better cooling
Lubrication: Priority main oiling system
Oil System Features: Integral boss for front feed, boss for rear scavenge rear main cap has provisions for wet sump pump
Filtration: Integral mount for spin-on filter
Oil Pan Rails: Solid (stock width) can be clearanced for strokers
Crank Clearance: 4.000" stroke (H-beam steel rods)
Main Caps: Nodular iron 4-bolt (1/2") w/dowels or splayed billet
Fuel Pump: OEM mount
Starter: OEM mount
Motor Mounts: Dual (front and side)
Cylinder Head Holes: Blind tapped to prevent leaks
Weight: Approximately 200 lbs.