footbrake or 2 step w/holley vac secondary ?

[GallopinGhost]

Thanks Dan. Any idea how far you got the secondaries open on the 2-step ? I heard that to make sure the secondaries don't close any once you launch. the whole 2-step, mash the gas, then release concept is a little fuzzy to me, alot happening in the carb I think

Originally Posted by Dan Lattimore

Went through this with Kenny Coonce's A/SA Camaro years ago. Car started to wheel stand after going to two step. With the stiffest spring in the vacuum valve the secondaries are fully closed when up on the two step. When the two step is released the car initially starts to leave on a two barrel with the secondaries steadily feeding in . Kind of like a controlled bog. Fine tuned it with vacuum springs till it carried them out and set down pretty as a picture. Kenny did the same thing to Randy Heer's car ( Kenny's old one ) and Randy stood there in disbelief . Shared that story with Jim and Matt Morgan at Englishtown one year. Shortly after Matt was replacing oil pan and headers on the Mustang.