The vacuum advance has nothing to do with the choke or throttle. It advances the timing at the distributor. It is necessary on a stock engine.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.