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What emission controls can you remove from a 1977 305 without negatively effecting engine performance?
Wiki User
∙ 12y ago
legally-none
practically-all except the PVC valve.
i would hook timing up to constant vacuum. ste base timing about 10 degrees and gofrom there.
I'm sorry, but NEVER hook the vacuum advance to direct vacuum. Always use a ported source, (above the throttle blades) If you have the vacuum hooked to a direct source you build an instant bog into the car from a stop. I fix maybe 2/3 cars a week in my Emission Shop with this problem. Been doing it for 23 years. They'll usually run with high HC at the Smog check, too.
Wiki User
∙ 12y ago
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