The difference in the 3-400 HP pickup engine and the semi's engine is about a 1000 foot pounds of torque at 400 HP. My cat truck engine is 550HP @ 1850 torque with peak torque at 1200RPM and peak HP at 1600RPM. Rated engine speed is at 2100RPM. A bit of difference from that pickup engine running 400HP @ 2800RPM with peak torque at ??? . I think my old 6.9 runs peak torque at around 1400RPM and runs out at about 2800RPM engine speed.
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Today's Featured Article - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
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