I went to the vo-tech school in Beloit in the early '80s for auto mechanics and the automotive instructor told this story several times during class: The school had an old Chevy school bus that had a 348 in it. One year it needed an overhaul and the automotive class overhauled it, using all replacement parts purchased from the local Chevy dealership. The engine was put back together, fired it up and never really could get it to idle right. It ran down the road okay, but the smooth idle was nonexistent. After numerous attemps of carb rebuilding, distributor rebuilds and looking for vacuum leaks, the instructor told the kids to pull the engine back out because they needed to find the problem. According to the instructors, the Chevy dealer had given them a 409/425 HP camshaft instead of the stock 348 camshaft. One of the instructors, who used to do a little 1/4 mile drag racing himself, told the kids to put the engine back into the bus and let them run it. He claimed that this bus, long retired before I ever went to school there, so I never could verify this, would just love to rev down the highway at 85 mph, plenty fast for an old school bus. Once again, I can't verify the actual truth to this story as the bus was retired before I ever went to school there.
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