BIG BLOCK CHEVY CAST ALUMINUM ENGINE BLOCKS

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Designed to be the strongest, most durable and easiest to build Aluminum big block available. The ultimate choice for competition engines.

Based on the Chevrolet big block V8 design, these Aluminum blocks feature extra strengthening in critical areas, increased displacement capacity, true priority main oiling and precision CNC machining.

Conventional configuration that retains all production dimensions for compatibility with standard components. Advanced engineering makes Dart Aluminum big blocks the choice for serious competition.

Features

• Standard 9.800” or 10.200” tall deck heights available for stroker engines.

• 4.250”, 4.500” or 4.600” bore sizes standard.

• Ductile Iron sleeves with extra thick cylinder walls promote excellent ring seal.

• Reinforcing ribs strengthen the lifter valley and bell housing flange.

• Inboard valley head stud bosses improve head gasket sealing.

• Priority main oiling system delivers oil directly to the crankshaft bearings to enhance reliability at high engine speeds.

• Steel 4-Bolt main caps with splayed outer bolts for extra strength.

• Dual bolt patterns for standard BBC and notched oil pans.

• Parts kit included (Part# 32000040). Parts kits do not include cam bearings.

Dart blocks can be special ordered with a wide array of special machining options to suit your specific requirements.

Big M Aluminum Specs

Material: RMR Cast Aluminum Alloy

Deck Height: 9.800” to 10.200”

Cylinder Bores: 4.250” to 4.600”

Main Bearings: Standard

Main Caps: Ductile or Steel

Cam Location: Standard

Lifter Bores: .842”

Freeze Plugs: Screw-in

Rear Seal: 2-Piece

Weight: 140-160 lbs.