The 4.2 V6 is a light duty engine for light duty trucks. The 4.9 I6 was a low powered heavy duty engine in a light duty truck. If you drive your pickup like a car and only occassionally haul a load the 4.2 will get better fuel mileage and last well over 200K - as long as its not a 1997 model. As long as you have a good radiator the 4.9 can take being abused and used hard much better.
The biggest problem with the 4.9 I6 is the MD50 (5 speed) transmission that is behind most of them. My company had 16 of the these - 8 failed with less than 50K on the clock.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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