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well you got that covered, do not use vacumm advance,i would keep the timing the way you have it, under the carbs are the carbs just open to the plenum or do you have a 4 hole spacer of some sort, i have one of these intakes here that is going on a 377 with center squrters, this intake is open under neath the carbs, i am planning a pair of hvh super suckers for under the carbs.
Jimi you may be on to something with the four hole spacer as upposed to the open. It may change the signal to the carbs and stable the idle. I have a customer that I can call and have him bring the car back to try that. Put it back on the dyno and see if that looks clean or not. Jake
Last edited by JAKE68; 05/07/09 12:20 PM.
