Dart engineered the Big M to be the strongest, most reliable and easiest to build big block on the market. With deck heights of 9.800 Inch and 10.200 Inch and bore sizes up to 4.600 Inch, the Big M gives you the versatility to build a wide variety of engine combinations. The Big M is fitted with Billet Steel 4-bolt main caps for ultimate bottom end strength.

More Features

• Competition Oiling System Ensures Adequate Lubrication To The Main Bearings At High RPM
• Features 4-Bolt Main Bearing Caps In Steel Have Splayed Outer Bolts For Extra Strength

Designed for high performance and medium duty applications, the SHP (Special High Performance) block is the ideal starting point for hot rodders, drag racers, circle track competitors, off-roaders, and high performance marine enthusiasts.

Dart SHP Pro Iron Small Block Chevy Blocks. The SHP PRO has been upgraded with machining options which were previously only available as custom modifications. With all the standard features of the SHP (Special High Performance) block plus upgraded mains, cam and lifters, the SHP PRO block is the ideal foundation for small block engines with high RPM potential. The added stability provided by upgraded valve train and bottom end components improve both performance and reliability at sustained high RPM.

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• Extra Thick Decks Ensure Reliable Head Gasket Seal
• Blind Head Bolt Holes Do Not Go Through To Water Jacket

An engine's cylinder heads and intake manifold must work together as an integrated system to produce maximum performance. The intake charge should make a seamless transition from the manifold runners to the cylinder head ports. Dart has accomplished this in every intake manifold we make.