Motown Cast Iron Engine BlockSmall Block Chevy350 Mains3.990 in. BoreNodular Iron Splayed 4-Bolt Main Caps FeaturesMaterial: Cast ironDeck Height: 9.025 in. (standard Chevy)Deck Thickness: .600 in. minimumCam Bearings: Standard ChevyCamshaft Location: StockLifter Bores: Indexed (stock .8437 in. bore)Bore: 3.995 in. (hone to 4.000 in.)Maximum Bore: 4.200 in.Cylinder Wall Thickness: .250 in. @ 4.200 in. boreLubrication: Priority main oiling systemFiltration: Integral mount for spin-on filterOil Pan Rails: Solid stock width (can be clearanced for Strokers)Crank Clearance: 4.000 in. stroke (with H-Beam steel rods)Main Caps: Nodular iron 4-bolt (7/16 in.) with dowelsFuel Pump: OE mountStarter: OE mountMotor Mounts: Front and sideCylinder Head Holes: Blind tapped to prevent leaksWeight: Approximately 200 lbs.