Ford introduced the 6.8 L V10 engine in 1997 as a powerplant for its heavy-duty trucks and vans. This 415-cubic inch motor uses pistons the same size as its 5.7-liter V8 engine; this lateral redundancy allowed Ford to save on manufacturing and tooling costs by using identical parts in different engines. Two versions of this motor have been produced; both the two-valve and three-valve models were in production as of 2010.
Torque and Power Ratings
Ford V10 engines have varying power and torque ratings. The two-valve versions have two outputs; engines for the E-series vehicles produce 305 HP and 420 foot pounds of torque. The F-series, Super Duty and Excursion engines produce 310 horsepower and 425 foot pounds of torque. Three-valve engines introduced in 2005 replaced the two-valve versions in all F-series and Super Duty trucks. These engines produce 362 horsepower and 457 foot pounds of torque.
Cylinder and Valve
The cylinders in Ford V10 engines have a bore of 3.55 inches and a stroke of 4.16 inches. The compression ratio is 9.2:1. These motors have a single overhead camshaft and use hydraulic roller-type valve lifters. The firing order is set at 1-6-5-10-2-7-3-8-4-9.
Ford V10 engines replaced a 460-cubic inch V8 engine used for many years; this large power plant weighed in at approximately 713 pounds. V10 motors weigh considerably less -- about 640 lbs. They are actually much smaller than the old 460 engines they replaced; nearly 10 inches shorter, with similar width and height dimensions. Ford also produces other versions of these engines for use in other applications like generators and industrial settings; these engines are sometimes manufactured to run on LP gas or natural gas.
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