I will contribute to the input with the dynamics of the intake/exhaust and cam design. The carburation flow volume at ~1800rpm is about all that the carb can handle and deliver fuel correctly. (with the engine producing its highest level of output, throttle wide open. It will make more torque and fill its cylinders fully at the 1650 point, due to cam timing, valve lift and intake runner size. The reality is that if the cam, and carburation, intake (from a 350 lets say) were used it could operate at a higher RPM making more power. Adding RPM only will make a faster tractor on the road, and in any gear while not pulling, but that only feels more powerful, and achieves little. Jim
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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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