4.120 in. Bore
Nodular Iron Mains
- Material: Cast iron
- Deck Height: 9.025 in. (standard Chevy)
- Deck Thickness: .600 in. minimum
- Cam Bearings: Standard Chevy
- Camshaft Location: Stock
- Lifter Bores: Indexed (stock .8437 in. bore)
- Bore: 4.120 in. (hone to 4.125 in.)
- Maximum Bore: 4.200 in.
- Cylinder Wall Thickness: .250 in. @ 4.200 in. bore
- Lubrication: Priority main oiling system
- Filtration: Integral mount for spin-on filter
- Oil 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 dowels
- Fuel Pump: OE mount
- Starter: OE mount
- Motor Mounts: Front and side
- Cylinder Head Holes: Blind tapped to prevent leaks
- Cam location is raised .134 in. over the stock Chevy location
- Machined with 50 mm cam journal
- Weight: Approximately 200 lbs.
Small Block Chevy Replacement Blocks with Major Muscle
World Products Motown II Small Block Chevy Cast Iron Blocks are entirely manufactured to QS-9000 specs using only two fixturing operations (no tolerance stacking like factory blocks made on an assembly line). Compared to OE models, World’s Motown II engine blocks contain thicker cylinder walls, and the expanded water jackets help improve cooling. Each engine block includes one-inch thicker bulkheads (to provide ample support of the front and rear mains), bosses for front-feed oil systems, and rear dry-sump scavenging. Solid pan rails (standard width design) ensure proper sealing, and stock-type oil pans can be used.
What is the max horsepower rating of this block?
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