Lean idle. Rich cruise.

I was wrong! Digging in again today I realize I mis spoke. Their are FIVE emulsion bleeds on each side of my blocks. 2nd from the top is a blank, all others are .028.

Idles are on top and .035.

FYI: you cannot use standard brass set screws in these blocks. They will screw all the way into the well. The damn factory bleeds have a little head on them. Picture a tiny miniature main jet. Stuck buying them from Holley. No clue which ones to block off now. What the hell were they thinking?

View attachment 1716281084


Save your money and buy your brass from McMaster-Carr. Just regular 6-32 set screws.

You’ll go BROKE buying headed brass.

I install the set screws until they are flush and send them.

Open the top hole and the fourth hole from the top to start.

It’s insane running all that emulsion.

Edit: you can lower the IFR. That helps with idle a bunch.

Also, a .035 is pretty big. You may end up in the .076-.078 idle air bleed range.

That’s not always a bad thing unless you run out of idle circuit and T slot before it gets on the booster.