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FWIW, '88 was when the 4.3/5.0/5.7 went to the roller cam. '96 is when they went to the Vortech heads on the v8s. I think the 4.3s were a few years earlier, maybe '94 for the Vortech heads.
On the rust, yeah I know... It is not worth it if there is any indication of rust starting. I am going to go look at the Dakota this week. I tend to crawl all over (and under!) vehicles when I buy, so I'll take a good look at the under side, brake/fuel lines, cab corners, rockers, doors, wheel openings, etc.
Chevy truck 305 and 350s did NOT get the roller cam until 96 when they went Vortech, I have rebuilt quite a few including one last week and another (95) on the stand right now.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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