It wasn't a 4wd, but back in the day I had a '75 GMC crew cab dually with a 454, headers, and dual pipes.
Someone had been in that engine. It definitely had a lumpy idle, for one thing. I needed some automatic choke parts for it, and the parts that fit came from a '69 Chevelle high performance 396 with a factory cast iron high rise intake. I had to overhaul it once 'cause the oil pump shaft broke and it spun a couple of rod bearings before I got it shut down. I could not find one single mark on the camshaft. Nada. Even stock factory cams have casting marks on them.
I don't know what it would top out at, but I once got bored on a long stretch of road at 65mph and pushed down on the throttle. Seemed like I was instantly going about 95, then 100. And still had quite a bit of throttle. I let it run 100 for a few miles and backed off 'cause I was rapidly coming to a town.
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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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