D&J Precision Machine Heavy Hauler 12v P-Pump Long Block

Heavy Hauler 12V P-Pump Cummins Long Block

Our Heavy Hauler 12V Cummins Long Blocks come fully assembled, including the oil pan, rear crank seal, front cover and crank seal, and oil filter housing, along with our HP Reman Cylinder Head utilizing a new casting. We include a street/towing camshaft, which typically results in a 200-300 degree drop in EGT and an increase in fuel economy due to the additional airflow. These engines are assembled with the best parts available, backed by our years of experience in the high-performance diesel industry, making them perfect for demanding work trucks. This long block is rated for up to 700 hp, providing robust performance for high-demand applications.

Key Features:

• Comprehensive Inspection: Disassembled, crack-checked, blasted, and cleaned before machining.
• Precision Machining: CNC bored, line bored, surfaced as needed, and torque plate honed to exact specifications.
• Custom ARP Head Studs: ARP 625 head studs provide the best head-to-block seal possible.
• High-Performance Cylinder Head: D&J HP Reman Cylinder Heads utilizing a new casting are disassembled, crack-checked, and fitted with high-performance components. Each head undergoes a CNC high-performance valve job and is pressure-checked before assembly.
• Blueprinted and Balanced: All engines are blueprinted, balanced, oil clearance measured, and rings file fit.
• Pre-lubed and Painted: Engines are painted black and shipped pre-lubed with break-in oil and filter included.
• Machined Rocker Box and Pedestals: Ensures a precise fit and optimal performance.
• High Power Rating: Rated for up to 700 hp, suitable for high-demand applications.

Build Includes:

• New Pistons
•  ARP main studs
• ARP 625 Head Studs 
• D&J HD 7/16" Pushrods
• D&J HP Reman Cylinder Head
• D&J tow performance cam
• New Tappets
• New Oil Cooler
• New Oil Pump
• New Crankshaft Seals
• Billet soft plugs (front, rear, and side)
• Reconditioned stock connecting rods
• Billet Front cover installed
• Billet Tappet cover installed 
• Machined rocker pedestals
• Pre-lubed with break-in oil and filter included
• Pressure-checked cooling system and crankcase to ensure no leaks on installation

High-Performance Cylinder Head Includes:

• High-performance CNC valve job performed
• New Top Hat style valve seals and soft plugs installed
• New +60lb springs installed
• Titanium Retainers installed

Shipping and Core Charges:

• Core Charge: $3000.00 (Cores can be sent in beforehand to eliminate this charge*)
• Shipping: Varies for each purchase.

Cores must include usable block, crank, cylinder head, rocker bases, oil pan and bolts, pickup tube, timing gear housing, timing gear housing cover and bolts, rear seal housing and bolts,  bolts, lower rocker box, and bolts.  If there are issues with any of the parts, you will not be charged the full core amount, only the amount needed to replace the bad part. Our core charge is based on re-manufactured parts.

Upgrade to our Heavy Hauler 12V Cummins Long Block for unparalleled performance and reliability in your high-powered Cummins engine.

SKU-41512703950966