
D&J Precision Machine Performance Series 5.9 Cummins Common Rail Long Block
D&J Precision Machine Performance Series 5.9 Cummins Long Block Our Performance Series 5.9 Cummins Long Blocks come fully assembled from the oil pan to the rocker box with our X-Beam Stock Length Billet Rods and our Stage 2 High-Performance Cylinder Head. We custom-build this engine for your application using the best parts available in the industry, including Cummins, Mahle Clevite, and ARP. This long block is rated for up to 1200 hp, making it perfect for high-performance applications. Key Features: Comprehensive Inspection: Disassembled, crack-checked, blasted, and cleaned before machining. Precision Machining: CNC bored based on application, line bored, surfaced as needed, CNC machined for the girdle and studs, and torque plate honed to exact specifications. Fire Ring Grooves: Cut into the cylinder head and block with custom ARP 9/16" head studs for the best head-to-block seal possible. High-Performance Cylinder Head: D&J Stage 2 Performance Cylinder Heads are disass