Is this Demon just junk or am I just junk at dealing with it?

Thanks for the info. I read up on the power valve myth more. Wish I had of known that 35 years ago, when there was no Internet, and all you had was the holley tuning book.
Why in world wouldn't holley rework that info on Web sites?


Yeah, it’s bad. I’ve called Holley on it and even called Quick Fuel before Holley bought it and it fell of deaf ears.

How many jacked up, slow running, fuel wasting engines were out there because Holley and ALL the authors writing books about this stuff wouldn't fix that? How many carbs would Holley had sold if they TAUGHT the end user how they work even at a rudimentary level?

Fortunately for us here on FABO, we have guys like Mattax who can teach this stuff better than me, and who are totally down with helping not just on carb tuning but how ignition timing and the timing curve affect each other. And not only type it out, but provide incredible graphics and drawings and crap like that, that I have no clue how to do.

Lucky fo me, I have known a guy for my entire life who is a guru at the very least on all this stuff, and he is more than willing to pas it on. He has mentored me through this stuff, and when I get stumped he takes the time to walk me through it.

He’s not on FABO, but he goes by Tuner on a couple other forums. When he talks, I’m listening. And taking notes. So I’ve been very lucky in this.


That’s why I get so pissy when the topic of power valve timing comes up and what is said is the often repeated error of how Holley does it..

If I didn’t mention it before, FABO member @12many did extensive testing of power valve timing and posted his results somewhere on FABO. Interesting stuff he learned and he was kind enough to post his results.