1989-1998 Cummins Performance Long Block (PDM-12VSTLB)
Description
Industrial Injection performance long block for 1989-1998 Dodge Ram 2500/3500 trucks running the 5.9L 12V Cummins. A complete bolt-in long block built for owners who want real performance gains and OEM-level reliability — the rotating assembly is balanced and blueprinted, the head is CNC-ported, and every wear part has been replaced with new.
The bottom end runs a balanced factory crank with shot-peened, balanced rods on ARP rod bolts. A 12mm Gorilla Girdle with ARP main studs ties the main caps together, and coated & chamfered pistons sit on H-series coated bearings. A Stage 1 performance camshaft is installed, along with a Big Iron oil pan, premium Killer Dowel Pin kit, new oil pump, water pump, oil cooler, oil pickup tube, and billet freeze plugs.
The head is the performance CNC-ported casting with new stainless valves, diamond-honed guides, milled flat with fire-ring grooves machined for a radius-cut fire ring gasket, 150 lb springs, and ARP 2000 head studs.
Sim-tested as a short block before final assembly. Built to be the foundation of a serious 12V build that doesn't sacrifice driveability.
Features
- Engine Specs
- Balanced & Blueprinted Rotating Assembly
- Sim-Tested Short Block
- Coated & Chamfered Pistons
- 12mm Gorilla Girdle with ARP Main Studs
- Balanced Factory Cummins Crank
- Shot-Peened & Balanced Rods with ARP Rod Bolts
- Stage 1 Performance Camshaft
- Coated H-Series Main & Rod Bearings
- Billet Freeze Plugs
- Premium Killer Dowel Pin Kit
- New Oil Pump, Water Pump, Oil Cooler
- New Oil Pickup Tube
- Big Iron Oil Pan
- Head Specs
- Performance CNC-Ported Cylinder Head
- New Diamond-Honed Valve Guides
- New Stainless Steel Valves
- Radius-Cut Fire Ring Head Gasket Installed
- Milled, Surfaced, & Fire-Ringed Head
- ARP 2000 Head Studs
- 150 lb Performance Valve Springs
- Comes with Rocker Assembly & Stock Pushrods
- Drilled & Tapped Coolant Freeze Plugs
- 1-Year Warranty (Parts Only)
- Part Number: PDM-12VSTLB
Notes
- Verify your year and engine match before ordering. 24V (1998.5-2002) and 6.7L (2007.5+) engines use a different long block entirely.
- Joe Gibbs Break-In Oil required for the first 300-500 miles (not included). Running standard oil during break-in voids the warranty.
- Does not include valve covers, ancillary gaskets for installation, or fluids.
- Upgraded pushrods (Stage 1 Billet or Chromoly) available separately — stock pushrods are included with the long block.
Original: $12,607.32
-65%$12,607.32
$4,412.56Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Description
Industrial Injection performance long block for 1989-1998 Dodge Ram 2500/3500 trucks running the 5.9L 12V Cummins. A complete bolt-in long block built for owners who want real performance gains and OEM-level reliability — the rotating assembly is balanced and blueprinted, the head is CNC-ported, and every wear part has been replaced with new.
The bottom end runs a balanced factory crank with shot-peened, balanced rods on ARP rod bolts. A 12mm Gorilla Girdle with ARP main studs ties the main caps together, and coated & chamfered pistons sit on H-series coated bearings. A Stage 1 performance camshaft is installed, along with a Big Iron oil pan, premium Killer Dowel Pin kit, new oil pump, water pump, oil cooler, oil pickup tube, and billet freeze plugs.
The head is the performance CNC-ported casting with new stainless valves, diamond-honed guides, milled flat with fire-ring grooves machined for a radius-cut fire ring gasket, 150 lb springs, and ARP 2000 head studs.
Sim-tested as a short block before final assembly. Built to be the foundation of a serious 12V build that doesn't sacrifice driveability.
Features
- Engine Specs
- Balanced & Blueprinted Rotating Assembly
- Sim-Tested Short Block
- Coated & Chamfered Pistons
- 12mm Gorilla Girdle with ARP Main Studs
- Balanced Factory Cummins Crank
- Shot-Peened & Balanced Rods with ARP Rod Bolts
- Stage 1 Performance Camshaft
- Coated H-Series Main & Rod Bearings
- Billet Freeze Plugs
- Premium Killer Dowel Pin Kit
- New Oil Pump, Water Pump, Oil Cooler
- New Oil Pickup Tube
- Big Iron Oil Pan
- Head Specs
- Performance CNC-Ported Cylinder Head
- New Diamond-Honed Valve Guides
- New Stainless Steel Valves
- Radius-Cut Fire Ring Head Gasket Installed
- Milled, Surfaced, & Fire-Ringed Head
- ARP 2000 Head Studs
- 150 lb Performance Valve Springs
- Comes with Rocker Assembly & Stock Pushrods
- Drilled & Tapped Coolant Freeze Plugs
- 1-Year Warranty (Parts Only)
- Part Number: PDM-12VSTLB
Notes
- Verify your year and engine match before ordering. 24V (1998.5-2002) and 6.7L (2007.5+) engines use a different long block entirely.
- Joe Gibbs Break-In Oil required for the first 300-500 miles (not included). Running standard oil during break-in voids the warranty.
- Does not include valve covers, ancillary gaskets for installation, or fluids.
- Upgraded pushrods (Stage 1 Billet or Chromoly) available separately — stock pushrods are included with the long block.
