Vacuum advance information and myths

Mattax,
Post #94 is correct & you continue to be wrong on the reason for the switch to PVA. So Chev used PVA on one engine. It could be because I believe PVA was used on some man trans cars, but later man & auto got MVA. What about the millions of others that used MVA? And then switched to PVA?

Post #103. Just more nonsense. How do you know Lars did NOT work for GM in 1965 or even earlier?????
Where is the PROOF that the assertions are not true?? Your earlier post which is just your opinion, but no supporting quote from an informed source like I provided???
Sorry, not getting the reference to my GTO. Are you saying it didn't use MVA?
From the 1967 Pontiac Service Manual, page 6E-31: 'The vacuum advance is connected directly to manifold vacuum advance so there is full vacuum advance at idle.