A 1964 vehicle doesn't require a PCV system in California. Take it off, use a vent on the pan (Jeggs) & one in the valvecover (oil cap); Now there's one less factor in the equation.

If you want power, why have a variable vacuum leak??

Good luck. \:\)

John M., I.I. #3370

"There are no shortcuts to any place worth going". -Anon