Heavy Hauler 6.7L Cummins Ready Run Engines — Built for Tow, Work, and Long-Term Reliability

Complete, dyno-ready long blocks paired with BD airflow and fuel upgrades — blueprinted, 5-axis CNC-ported head, 9/16" ARP studded, and rated up to 700 hp. If you’re replacing a tired 6.7L or planning a no-drama power refresh, this is the “install it once, tow for years” solution.

Quick take: Heavy Hauler = precision-machined long block + D&J Stage 1 performance head + 9/16" ARP studs (175 ft-lb) + BD Screamer turbo & two-piece manifold + full high-pressure fuel system + ancillaries (Fluidampr, water pump, sensors, rails & lines). Rated to 700 hp, emissions-compliant replacement (50-state legal by design).

Choose Your Engine

Both packages include BD’s manifold, Screamer turbo (CARB EO D-553-32), full CP3-to-injector fuel system, and all listed ancillaries for a streamlined install.

At-a-Glance

  • Power Ceiling: up to 700 hp (tow-friendly spec)
  • Install Time: ~14h 30m
  • Warranty: 24-Months / 100,000 Miles (parts)
  • Emissions: Replacement parts, 50-state legal by design (EMS:4)

What Makes a Heavy Hauler “Ready Run”

The Long Block (Foundation)

  • Comprehensive teardown & inspection: crack-check, blast, clean; all threads chased.
  • Precision machining: CNC bore & line-bore, surface as needed; torque-plate hone for ring seal.
  • Blueprinted & balanced: oil clearances measured; rings file-fit; assembled in clean room.
  • 9/16" ARP head studs torqued to 175 ft-lb for robust head sealing.
  • D&J Stage 1 performance head: extra-large heavy-duty seats, thread-in soft plugs, 5-axis CNC ported, CNC valve job, pressure-checked.
  • D&J HD 7/16" pushrods & tow-performance cast cam for durable torque delivery.
  • Pre-lubed & painted (black) with break-in oil and filter included.

Air & Fuel (Matched, Calibrated)

  • BD two-piece high-silicon ductile iron manifold (SEMA SC-BDD01-0078), pre-drilled for pyro, grade 10.9 hardware.
  • BD Screamer turbo: 64.5 mm 7+7 billet compressor, 70 mm 12-blade turbine with ~15% lower MOI for quicker spool; actuator pre-programmed; VSR balanced; CARB EO D-553-32.
  • BD high-pressure fuel system: reman CP3 with new metering unit; injectors and pump tested on Bosch 815 bench; includes BD OEM-fit fuel lines & quality gaskets.

Ancillaries Included (Fewer Trips to the Parts Store)

  • Fluidampr harmonic balancer
  • Turbo oil feed & drain tubes
  • New water pump & thermostat
  • Coolant temp sensor, oil pressure switch/sensor
  • New Bosch fuel rail with pressure sensor & relief valve
  • New high-pressure lines & injector feed tubes
  • Dipstick & tube

Who It’s For

Heavy Tow & Work Trucks

If your livelihood depends on consistent EGT control, clamp-load retention, and no-surprises torque, the studded head, ported airflow, and quick-spool Screamer deliver repeatable grade performance.

Refresh with Headroom

Replacing a high-mileage 6.7L? Start with a blueprinted base that will comfortably support future upgrades to ~700 hp without revisiting the short block.

Year-Range Notes

  • 2007–2012 package: Heavy Hauler long block + BD manifold + Screamer turbo + full HP fuel system + ancillaries.
  • 2013–2018 package: Same complete spec with updated components to match later emissions & actuator strategies.

Both retain emissions equipment and are sold as replacement assemblies; Screamer turbo carries CARB EO D-553-32.

Install & First Start Checklist

  1. Pre-lube: Prime oil system; verify oil pressure during cranking with fuel disabled.
  2. Cooling system: Flush if contaminated; fill with fresh, correct-spec coolant; bleed air.
  3. Fuel system: Verify clean supply; prime to purge air; check for leaks at rails/lines.
  4. Sensors & learns: Confirm connectors; clear codes; perform idle relearn if applicable.
  5. Break-in oil: Follow included instructions; avoid extended idle; vary load for ring seating.
  6. Post-heat-cycle re-torque: Re-check accessible fasteners and inspect for any weeps.
Warranty: 24-Months / 100,000 Miles (parts). Emissions: Replacement-part compliant (EMS:4). Screamer turbo CARB EO D-553-32. Manifold SEMA SC-BDD01-0078.

FAQ

Do I need tuning?
Not required for installation. These packages prioritize OE-like drivability with stronger airflow and fueling. If you add power mods later, tune accordingly.

What transmissions pair best?
Healthy 68RFE/AS69RC with adequate cooling. If you tow heavy, consider BD upgrades (deep pans, pressure mods) or a BD built unit.

Is the turbo truly drop-in?
Yes — actuator is pre-programmed and units are VSR balanced for quick spool and reliability.

Related BD Solutions
6.7L Cummins Heavy Hauler Ready Run Engine Screamer Turbo ARP 9/16 Studs Work & Tow

Always verify fitment and follow the supplied installation instructions and torque specs. Keep emissions systems intact and compliant.