Technical Specifications of...
Motown Lite Aluminum Blocks

Material: 357-T6 aluminum (strongest available)
Deck Height: 9.025" (standard Chevrolet)
Deck Thickness: .600" minimum
Cam Bearings: Standard Chevrolet small block set
Main Bearings: Standard Chevrolet (350 or 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: 4.155"
Cylinder Wall Thickness: Approx. .075" @ 4.155" 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, drilled for dry sump valley scavenge lines, cross-feed lines between left and right lifter oil galleys
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) (sleeves may need notching)
Main Caps: Splayed billet steel
Mounts: OEM starter and oil filter mounts
Block: Side ribs for extra strength & cooling - cross-ribs in valley
Motor Mounts: Dual (front and side)
Cylinder Head Holes: Blind tapped to prevent leaks
Weight: Approximately 100 lbs. with sleeves - ready to run