6.7L 2011-2016 Powerstroke Full Running Workhorse Ford Diesel Crate Engine Cab & Chassis Choate Performance

The “Workhorse” model is specifically designed for the working man who requires maximum durability and reliability for regular heavy hauling and strenuous towing.

 

Key Features and Fixes 

Upgrades Over the Daily Driver:

• O-Ringed Heads
• Billet Flex Plate
• Coated, Fly Cut and Delipped Pistons
• Stage 2 Cam
• Chromoly Pushrods
• Welded Cam Gear

Core Performance & Power

• High-Output Performance: Rated for 600+ HP capability, delivering significant power over stock for demanding applications.
• Fully Balanced Rotating Assembly: Precision-balanced components ensure smooth, vibration-free operation and extended bearing life at high RPMs.
• Optimal Oil Pressure: Proprietary bearing tolerances and machining result in 5 lbs higher oil pressure at startup compared to competitive builds, ensuring superior lubrication.

Reliability & Durability Upgrades

• Spun Bearing Elimination: Machining for correct main and rod bearing clearances paired with upgraded, high-stress bearings prevents catastrophic bearing failure.
• Enhanced Valve Integrity: Features all-new, upgraded material valves that eliminate the high-heat separation common in OEM exhaust valves, preventing compression loss and piston-to-valve contact.
• Permanent Timing Fix: The crank gear is TIG-welded into place, eliminating the risk of the gear spinning, which commonly throws off timing and causes pushrod damage.
• Improved Head Sealing: O-Ringed heads provide a superior seal, essential for maintaining integrity under high cylinder pressures.

• Stage 2 Valvetrain & Drivetrain: Equipped with a Stage 2 Camshaft and Chromoly Pushrods for enhanced strength, and a Billet Flex Plate for maximum drivetrain integrity.
• Complete Drop-In Ready: Ships complete with new water pumps, thermostats, OE harmonic balancer, flywheel, turbocharger, and all necessary sensors for a quick and comprehensive installation.

 

Machining Process:

Choate Engineering Performance doesn’t just rebuild engines - we remanufacture them. Each of our engines undergoes extensive, precision machine work to correct OEM flaws and ensure durability and reliability.

Engine Block Machining:

Each of our engine blocks are CNC blueprint machined using state-of-the-art CNC machines. This process ensures perfect dimensions, precise tolerances, and optimal alignment. This starts with decking the surface of the block to achieve the necessary flatness and smoothness (Ra 30 or better) required for flawless sealing with MLS head gaskets. The cylinders are then diamond honed to an extremely tight tolerance to match the piston diameter (within the nearest 0.0001 inch). Following honing, the main bearing bores are line honed to establish a true, straight centerline for the crankshaft. Finally, the cylinder bores are bored to a true 90 degree angle from the crankshaft centerline.

Cylinder Head Machining:

Our cylinder heads are fully machined and enhanced in-house to improve airflow and reliability. Each head is first magnafluxed and pressure tested to ensure they are free of any cracks or leaks. The surface is then precision decked to an extremely smooth finish, guaranteeing the necessary flatness for a perfect seal with MLS head gaskets. For enhanced durability, o-rings are cut and installed into the deck surface to dramatically improve sealing under high cylinder pressures. Internally, the valve seats are machined to optimize airflow and prevent common failures, and the entire valve train geometry is blueprinted to specific tolerances to reduce lifter preload and prolong component life.

Rotational Assembly Balancing:

The balancing of the rotational assembly is crucial for eliminating vibration and maximizing engine longevity. This precision work involves checking and correcting the balance of the crankshaft, connecting rods, and pistons. The crankshaft is thoroughly checked for run-out and inspected for fatigue before being polished and ground to strict concentricity tolerances (0.0005 or less) to ensure the new bearings receive the best possible surface. Rods are inspected and conditioned, and all bearing clearances checked to ensure proper fitment with the new bearings. Each of the pistons, rings, and pin retainers are meticulously weight matched (to a tolerance of 2 grams or less) prior to crank balancing. Then the entire assembly is dynamically balanced on specialized equipment. This ensures that the engine runs smoothly, minimizing stress on the bearings, and extends the overall life of the components.

 

Components and Parts:

Engine Core Components

• Cylinder Block
• Crankshaft
• Steel Connecting Rods
• Stage 2 Camshaft
• Coated, Flycut, & Delipped Pistons
• Reman Cylinder Heads
• New OE Harmonic Balancer
• Choate Engineering Billet Flex Plate (Flywheel is NOT included for manual builds!!!)
• Chromoly Pushrods
• Updated Connecting Rods
• Upgraded Exhaust Valves
• Upgraded Intake Valves
• Upgraded HX Performance Bearings
• Main Bearings
• Rod Bearings
• Cam Bearings
• Main Bolts
• Head Studs
• New Lifters
• Rockers
• New Freeze Plugs
• Upper Oil Pan
• Lower Oil Pan

Gaskets and Seals

• New Head Gaskets
• Rear Cover and Gasket
• Rear Main Seal
• Front cover and Gasket

Cooling System

• 2 Water pumps
• 4 Thermostats

Sensors and Electronics

• Fuel Rail Pressure Sensor
• Map Sensor
• Coolant Temp Sensor
• Intake Air Temp Sensor
• Exhaust Back Pressure Sensor
• Engine Oil Pressure Switch
• Crank Position Sensor
• Camshaft Position Sensor

Miscellaneous

• Turbocharger Turbo
• Pickup tube
• Oil Cooler
• Fuel Filter

Cylinder Head Components

• O-Rings
• New Valves
• New Valve Guides
• New Valve Seals
• Threaded Blow Proof Plugs