Originally Posted by DrCharles
Thanks! I will try going back to the .033 and .030 MAB and see how it behaves. At least that's the easiest to change smile
If I can just stay out of the boosters until the transition slot is nearly 100% engaged, my overrich cruise should get better... I hope.

It occurred to me that the AFR might be going richer at higher load/rpm because I only have the primary blades half-open or less, and 3" of vacuum.
So it's acting like a small two-barrel and it's being sucked on really hard whistling

I could disconnect the secondaries and open the primaries to WOT. Bet it wouldn't be as rich at 4000+, and less vacuum too.


Krautrock answered it. Yes, the bigger MAB will make it richer down low and leaner up top. Which is what all Holleys I’ve played with have been lean down low and rich up top. Assbackwards from what it really should be.

Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston