CLASS RACER FORUM - footbrake or 2 step w/holley vac secondary ?

CLASS RACER FORUM (https://classracer.com/classforum/index.php)

- Stock and Super Stock Tech (https://classracer.com/classforum/forumdisplay.php?f=4)

- - footbrake or 2 step w/holley vac secondary ? (https://classracer.com/classforum/showthread.php?t=72704)

Re: footbrake or 2 step w/holley vac secondary ?

Made some progress. I've got the secondary actually opening somewhere on the run and have discovered that the secondary is worth at least .80 over just the primaries.

and thanks Danny for the advice and for the tow back to the pits from the top end(blown fuse)

got alot of work to do

Re: footbrake or 2 step w/holley vac secondary ?

Quote:

Originally Posted by Dan Lattimore (Post 586390)

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.

Wonder if this theory would work on a stick car?