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 - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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