Quote:
Originally Posted by Featherburner
Yup, I thought 84 was the last year because my brother had, actually still has an 84 K20 factory no cats leaded gas fill tube but then my cousin bought an 86 K20 no cats and regular leaded gas fill tube. These trucks had heavy duty emissions.
Heavy duty trucks were way different rules.
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Wow, I did not know that. I guess above a certian GVWR you had different rules.