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Emission Code 3
THE FOUNDRY THAT SUPPLIED THESE BLOCKS TO DART FILED CHAPTER 11 IN 2025
They are further tuned up by us on our Newen Contour CNC seat and guide machine
A range of Holley 302-X retrofit pans are available to suit your specific requirements
“Boost Builder” functions offer the ability to assist building boost on the starting line by altering ignition timing
Dart LS Iron Long Block, Mechanical Cam, MLX Head Gaskets LS Next2 Emission Code 3Our 427ci mechanical roller, iron LS long blocks come in two primary flavors: conventional or copper head gaskets. This build uses Cometic MLX gaskets which have a max boost rating of 35 psi. Copper head gaskets with fuel hoops will hold far more pressure, but may require occasional torque adjustments. Those long blocks have a different part selection to better work with the higher boost levels. The top of our LS horsepower ladder is the 462ci billet
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