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Discussion Starter · #1 ·
Where can I find the vacuum switches for the '77 AMC 258 I-6? Right now I am running without any of the three on the top of the valve cover, and without the one on the firewall. A better question would be, what sort of improvement would I see if I put that system back in?



 

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Probably none, I don't think your '77 ever had any. These switches are for the feedback models with the stepper motor on the back of the carb. I think they started about '80 calif. and '82 federal.

 
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