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1970 vette vibration issue

Old 08-17-2018, 08:54 PM
Thread Starter
Join Date: Sep 2017
Posts: 34

if it was just for economy they would not be on the performance cars. and the new vettes are still performance and they have spark advance on them. my friend has a hellcat and that has spark advance on it. so spark advance is not just for economy it is also performance. i watched the advance on the hellcat ahd saw it move for both normal driving and when i put it into performance mode. thanks bp
Old 08-17-2018, 11:07 PM
73shark's Avatar
Super Moderator
Join Date: Apr 2006
Location: KC, MO area
Posts: 2,644

I think you're conflating mechanical advance and vacuum advance. I agree that mechanical advance is for performance, but vacuum advance was strictly for economy. You can run without vacuum advance and not see any difference in how the car performs.

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