vaccum advance
#2
CF Monarch
#3
Trending Topics
#8
#9
CF Monarch
a small device that would slow down the drop and rise in vacuum, and was an early smog control device, that is why I ask this question.
#10
CF Monarch
The cam is not standard, or is built to this engine? At what idle rpm do you have X vacuum? What is the vacuum at say 700 rpm? As oilcan has pointed out, yes the older cars (I have a 70 delta 455 with remninants of smog control) that had a tps that also controlled vacuum advance. This was a small ported attachment. My suggestion is for vacuum advance to set the timing without vacuum, and use a vacuum port from the intake manifold, not from carb, shew, long winded.