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Rod Greene · 03-31-2017, 03:35 PM

Since I have never raced a car with a Holley on it or owned one, I have question.
I am working on a 440 6bbl car for the street everything I read says take idle vacuum and divide it by 2 to figure out the correct power valve. Is there any benefit running a high flow PV? How about on a race engine. I have my old stocker engine on a run stand and am playing with the 340 6pack setup just to learn a bit about it. Any suggestions?

Thanks

03-31-2017, 03:35 PM	#1
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 530 Likes: 424 Liked 242 Times in 81 Posts	Holley question Since I have never raced a car with a Holley on it or owned one, I have question. I am working on a 440 6bbl car for the street everything I read says take idle vacuum and divide it by 2 to figure out the correct power valve. Is there any benefit running a high flow PV? How about on a race engine. I have my old stocker engine on a run stand and am playing with the 340 6pack setup just to learn a bit about it. Any suggestions? Thanks __________________ Rod Greene Real men shift for them selves. Slowly working on TA Challenger for D,E/S and a 72 Challenger for SS/K, L as if I don't have enough other projects.