Ford 5.0L "Road Runner" V-8

5.0L Boss 302 Engine Specs & Info

The 5.0L "Road Runner" V-8 is the modern version of Ford's HiPo 302. It can be found in the 2012 and 2013 model year Boss 302 Mustang, where 10 lb-ft of torque is compromised for marginally greater horsepower and an outlandish 7,400 rpm redline. A forged steel crankshaft, forged aluminum pistons, and CNC ported cylinder heads are amongst the engine's improvements over Ford's standard 5.0L V-8. It's relatively high compression ratio also contributes to its enhanced performance characteristics. The high revving Boss 302 was rated at 444 horsepower at 7,400 rpm and 380 lb-ft of torque at 4,500 rpm.

Ford 5.0L Road Runner, Boss 302 Specs


Ford 5.0L Coyote "Road Runner" V-8


90° V-8


2012 - 2013 Boss 302 Mustang


302 cid, 5.0 liters

Bore x Stroke:

3.63" x 3.65" (92.2 mm x 92.7 mm)

Compression Ratio:

11.0 : 1

Block Material:


Cyl. Head Material:


Firing Order:



Naturally aspirated, 80 mm throttle body


Sequential multi-port fuel injection

Fuel Requirement:

Premium 91+ octane unleaded gasoline


DOHC, 32 valve (4v per cylinder), high lift exhaust profile, twin independent variable camshaft timing (Ti-VCT), CNC ported cylinder heads

Cooling System Capacity:

15.2 qts (14.4 liters)

Engine Oil Capacity:

8.5 qts w/ filter (8.0 liters)

Engine Weight:

444 lbs

Peak Horsepower:

444 hp @ 7,400 rpm

Peak Torque:

380 lb-ft @ 4,500 rpm

Max Engine Speed:

7,400 rpm

Fuel Economy Rating:

15 mpg city, 26 mpg highway, 19 mpg combined


Airflow is a key ingredient to the engine's performance characteristics. A "box" intake manifold houses the intake runners, which feed CNC ported cylinder heads. The engines dual overhead cam design features a high lift exhaust profile and 4 valves per cylinder, in addition to twin independent variable camshaft timing. A relatively high 11.0 : 1 compression ratio contributes to the engine's "snappy" throttle response and high performance potential over its broad operating range. While the engine's torque is slightly lower than that of Ford's standard 5.0L V-8, it's horsepower and torque curves are altogether different due to the engine's unique traits.