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hey guy looking for a new truck. i loved my old 86 f250 which was non catalyst. (had loud exhaust and only had glasspacks as mufflers for inspection) i am wondering if all 86 and back 3/4 tons were non catalyst?
Everything was factory equiped with catalyst except some of the diesel models. If yours had no catalyst, then it was removed illegally. Those original Ford catalysts on the big 351W and the 460 had a tendency to break, plugging the exhaust. That is the most common reason for removal. We actually have replacements that fix that problem once and for all, so you can run with free flowing catlaysts and be completely legal in all counties.
Everything was factory equiped with catalyst except some of the diesel models. If yours had no catalyst, then it was removed illegally. Those original Ford catalysts on the big 351W and the 460 had a tendency to break, plugging the exhaust. That is the most common reason for removal. We actually have replacements that fix that problem once and for all, so you can run with free flowing catlaysts and be completely legal in all counties.
Thats what I thought but the sticker on my valve covers and sticker on the rad cover specified non catalysts
Ok, you guys are right, oversized vehicles had exemption for a lot of years. I'm not sure when the oversized stuff was also required, I think in the early nineties. There is no advantage to the non-catalyst models.