Vacuum advance information and myths

Bewy said

Fishmen,
It seems you might be unaware that Chrys used manifold connected VA to cool the engine?

For 1973-78:
' When engine coolant temps at idle reaches 225*f, the valve opens automatically & applies manifold vacuum directly to the distributor.....This increases engine idle speed & provides additional engine cooling.'

You want to think about why the idle speed increases.....

Click to expand...

I asked in a FB mopar group a while back VA ported or not. The whole thing got pissy fast. I was surprised how many people don't, won't try to run manifold vacuum. 68 was the year Mopar changed over, 65 in Cali I think for emissions. I always run my street cars manifold VA and I know racers that use MV to keep their engine cooler between rounds.