6.7L Power Stroke
Ford's new 6.7L Power Stroke, codenamed the Scorpion, is Ford Motor Company's first in house designed diesel platform for the F-series trucks. Ford has announced that it needed to produce its own diesel engine to stay profitable and competitive in today's booming diesel truck market, so they have developed the latest Power Stroke without the help of long time diesel partner, International (who has been building diesel engines for Ford since 1982). It is also suggested that the lawsuits between Ford & Navistar (International) had a negative impact on their relationship. Nonetheless, International will still be producing diesel engines for Ford's medium duty truck line.
6.7L Power Stroke Specifications:
Years Produced: |
2011 + model years |
Displacement: |
409 cubic inches, 6.7 liters |
Configuration: |
V-8 |
Firing Order: |
1-3-7-2-6-5-4-8 |
Block/head Material: |
- CGI (compacted graphite iron) engine block, aluminum cylinder heads |
Compression Ratio: |
16.2:1 |
Bore: |
3.90 inches |
Stroke: |
4.25 inches |
Injection: |
- Direct injection, high pressure common rail |
Aspiration: |
- DualBoost variable geometry wastegated single sequential turbocharger. |
Valvetrain: |
OHV, 4 valves per cylinder, 4 rocker arms per cylinder |
Oil Capacity: |
13 quarts |
Oil Requirements: |
- CJ-4 or CJ-4/sm required to ensure emission systems compatibility |
Weight: |
approx. 1,100 lbs |
Horsepower: |
Intro: 390 HP @ 2,800 RPM |
Torque: |
Intro: 735 lb-ft @ 1,600 RPM |
6.7L Power Stroke Info:
• The pre-production 6.7L Power Stroke was nicknamed the "Scorpion" due to its unique turbocharger mounting location on top of the engine between the cylinder heads.
• The 6.7L Power Stroke features an extremely flat torque curve. Peak torque is maintained from 1,600 RPM to 2,800 RPM.
• Single Sequential turbocharger featuring variable geometry turbine housing. View more information: 6.7L Dualboost Turbocharger
• Reversed intake & exhaust flow. Intake valves located on the outside of the cylinder head, while exhaust exits into the engine valley where the turbocharger is mounted. Increases thermal efficiency of the turbocharger.
• "Instant Start" glow plugs which are said to provide quicker starts in even the coldest of weather.
• Compacted graphite iron block for reduced weight (160 lbs lighter than the 6.4L Power Stroke).
• Engine uses fractured cap Mahle connecting rods.
• Features piston cooling jets for lower piston temperatures. Oil is jetted into the bottom or the piston and travels through a cavity within the piston, cooling the top of the piston before exiting. This helps lower combustion temperatures and increase the longevity of the engine.
• B20 biodiesel compatible.
• 6.7L Power Stroke receives 18% increase in fuel mileage over 6.4L.
6.7L Power Stroke Emissions Equipment:
• Exhaust gas recirculation (EGR)
• Diesel oxidation catalyst (DOC). The DOC is a ceramic catalytic converter designed to oxidize hydrocarbons in the exhaust stream.
• Selective catalyst reduction (SCR). The SCR is where diesel exhaust fluid (DEF; 32.5% urea) is injected & mixed into the exhaust stream. Diesel exhaust fluid is used to convert nitrous oxides into water & nitrogen. A DEF tank will need to be filled at every oil change interval.
• Diesel particulate filter (DPF). A DPF captures diesel particulate matter (soot) and uses active regeneration technology to heat the exhaust system periodically, completely burning soot build up & cleaning the filter.
6.7L Power Stroke HP/Torque Graph:
*Torque curve represents the earlier 390 hp version of the 6.7L Power Stroke.
Ford's iconic Super Duty receives a handful of aesthetic changes for 2011, including a redefined, larger, more aggressive grille design. It's safe to say this Super Duty's stance matches the muscle monted between the fenders.
6.7L Power Stroke Diesel
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