Quote:
Originally Posted by WildBillyT
What?
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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.
Quote:
Originally Posted by L695speed
Feds mandated cats in 73 didn't they, so how can 86 be the last pre cat year? Unless rules were different for trucks.
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Heavy duty trucks were way different rules.