GVSII, your truck needs a six-speed manual transmission to perform well, which kinda proves my point. Back in the day we got by with four-speed transmissions, which really had only three usable gears. You would not be very happy if your truck had a four-speed rather than a six-speed.
But your truck is almost ten years old, and we're talking about current production trucks. Let's see how things have changed: Your '06 5.4 is rated 300 hp @ 5000 rpm, 365 lb-ft @ 3750 rpm. That's a pretty fast-turning engine. But the current production 5.0 is rated 360 hp @ 5500 rpm, 380 lb-ft @ 4250 rpm. Engine rpm for both peak power and peak torque have gone up a whopping 500 rpm! Should you swap your 5.4 with the 5.0, you'll probably wish your six-speed tranny had a couple more splits. And don't expect the trend of ever-higher engine speeds to stop; the easiest way to get more power out of an engine is to increase its rpm.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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