[jimmymac]

I have not been able to pull the vacume on my engine to operate a excel vac dist. with the dual plane intake. I know the tunnel wedge will have less vacume. Till I slam the throttle shut at 7500. Iv'e never had a hesitation or lack of low speed power! the car weighs 3440. I'm running a 1970 model excell dual point that I converted to stock ford electronic pieces. Its a 11.75 to 1 engine. Mr Partrige from south of Menphis Tn cut the cam for the car. It loves all the advance I throw at it about 40 winter 38 summer. All in by 3000. Question is wouldn't a light car use more advance sooner? the carbs are tuned for lean cruize and a little fat wide open.