21 FORD MUSTANG GT 5.0 COYOTE ENGINE 10R80 AUTOMATIC TRANSMISSION SWAP 18-22

2021 Mustang GT Gen 3 Coyote / 10R80 combination is the final evolution of the S550 platform before the “carbon trap” era caused a slight power dip in late 2022. This specific year is highly coveted for swaps because it maintains the full factory rating of 460 HP and has the most mature version of the 10R80 software.

Technical Specifications (2021 Model Year)

• Engine: Gen 3 Coyote (Dual Fuel Injection: Port & Direct).

• Output: 460 HP @ 7,000 RPM / 420 lb-ft Torque @ 4,600 RPM.

• Transmission: 10R80 10-Speed SelectShift Automatic.

• Compression: 12.0:1 (Recommended fuel: 93 Octane).

• Block: Plasma Transfer Wire Arc (PTWA) liner (lighter and more durable than traditional sleeves).

Swap Component Checklist (“Master Kit”)

For a 2021 dropout to be a “complete” swap for a client or project, it should ideally include:

• Powertrain: Engine (Intake to Pan) and 10R80 Transmission with Torque Converter.

• Electronics: Engine Wiring Harness, PCM (Engine Computer), and Body Control Module (BCM).

• Accessories: Alternator, Starter, A/C Compressor, and Front Drive Belts.

• Peripheral Gear: Drive-by-wire Accelerator Pedal, MAF Sensor, and Airbox.

• Shifter Assembly: The 10R80-specific shifter and linkage (essential for electronic gear selection).

Installation Notes for Restomods

• The Control Pack: For swaps into older cars, use the Ford Performance Control Pack (M-6017-M50BAA) specifically designed for the 2021 10R80. This bypasses the PATS (anti-theft) system and simplifies the wiring to a few “power and ground” connections.

• Cooling: The 10R80 generates significant heat compared to older 6-speeds. Ensure the swap includes the factory transmission cooler or a high-capacity aftermarket unit.

• Oil Pan: The 2021 Coyote uses a composite (plastic) oil pan. If swapping into a classic chassis (like a 60s Mustang), you will almost certainly need a steel Moroso or Canton front-sump swap pan to clear the crossmember.