Quote:
Originally Posted by Brad54
Roller rockers? No.
"Double roller timing chain?" That's a much better possibility.
That I wouldn't know the answer to.
But I DO know the answer to "factory roller cam in a 327."
-Brad
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I'm usually in the 67-72 forums, but got bored and went here. Interesting thread. My suspicion is that he had a timing chain replaced at some point, and the shop put in a roller chain, like you mentioned. It's going to be interesting if the engine comes back stamped like something that did come from factory with a roller cam (as in it would not be the original engine). Machine shop guys (well, anybody) can do strange things, sometimes.
As for the vacuum gauge, it is a tool for getting better mileage, as you can watch it and keep the vacuum in the big numbers (with a light enough foot).
I don't know that much about this vintage of truck.
As for the "65-1/2", I'd have to say that since the Changeover happens in the summer, with new vehicles typically rolling off the assembly line in late August to early September, a person could be confused and think it is such, where it obviously is just the new model year vehicle.