Originally Posted by SPICOLIE203
Thanks at what rpm will all of the advance curve most likly be in on so i can set the timing then?
i would set it with the vacuum disconected correct?
You'll have to answer that yourself. Use your timing light, and force the idle down until you are satisfied that the curve is "at the bottom." If the dist has light springs, or possibly even one broken spring, hard to say. Some of the guys I used to hang with, and I've done it myself, used to drag race with NO springs. We were using dual point distributors back then, and the friction of the points would keep the weights "in" for starting. The advance would literally be "all in" all the time. I've been told that this is not a good method, that it can cause "spark scatter" under certain conditions. Evidently the weights can sort of bounce around.