[shortdesc]

The Heavy Hauler 6.7 Cummins Common Rail Long Block is built for demanding work trucks, towing applications, and high-horsepower builds. Rated for up to 700 HP, this long block features a D&J Stage 1 High-Performance Cylinder Head, a street/towing camshaft for improved airflow and fuel efficiency, and custom ARP 9/16” head studs for superior head-to-block sealing. Each engine undergoes CNC blueprinting, precision machining, and extensive quality control to ensure unmatched durability and performance. Fully assembled with an oil pan, front cover, rocker box, and pre-lubed with break-in oil, this long block is ready to handle the toughest applications. Manufactured by D&J Precision Machine, this engine is designed for reliability, power, and efficiency.

• Rated for up to 700 HP - Designed for demanding work applications, though high-horsepower tuning is not recommended for heavy towing
• Stage 1 High-Performance Cylinder Head - 5-axis CNC ported with heavy-duty oversized intake and exhaust seats for increased airflow
• Street/Towing Performance Camshaft - Lowers EGTs by 200-300 degrees, improving efficiency and fuel economy
• Custom ARP 9/16" Head Studs - Delivers superior head-to-block sealing for high-boost reliability
• Fully Assembled & Pre-Lubed - Includes oil pan, front cover, rocker box, and break-in oil for seamless installation

Parts

• 24-Months

Labor

• 24-Months

• For any warranty claims / issues please contact D&J Precision Machine. Phone: 740-297-7223
• Not for sale on licensed California vehicles

[/shortdesc][product_details_title]Heavy Hauler Long Block Engine | Dodge 6.7L Cummins | 2007.5-2012[/product_details_title][product_line]ENGINES[/product_line][product_applications]Enable[/product_applications][product_meta_keywords]Dodge, 6.7L Cummins 07.5-12, Engine Long Blocks & Heads, Long Blocks, Heavy Hauler Long Block Engine Dodge 6.7L Cummins 2007.5-2012[/product_meta_keywords]