Air/ fuel tuning

ap6street said

When you say timing. What's the best way to know if it wants more or less. It's got locked 28 so for idle I would think that would be good.

Seems quite high for the jets to be taking over ?? 3100rpm can this be the secondaries at all starting to richen it up?

I could go a 76 . The WOT would still be pretty good like that. Just get a lot of mid throttle readings hitting 15s maybe even a 16 here and there.

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Sorry I didn't finish above.
If you went and drove the car at 22* timing, it will feel sluggish above a 2000 rpm or so.
This would just be a test to see where it ought to be at idle. A richer mixture will burn quicker and needs less timing. I don't think yoiur going to be able to get it rich enough to have power in gear with 28*. You might, I just don't think so.
Knowing what that combo likes for idle timing, and assuming the dyno shop was pretty darn close on WOT timing, you can setup a distributor provide both.

It is not high for the main jets to take over. I'll tell you how this finally sunk into my skull. I had the car on a chassis dyno, and the last pull with leaner primary jets was just about the same as the richer. So I left it that way. On the way home, the engine started revving and then dying - but only above 60 mph. Slowed down to 55 mph (whicj was fairly safe to do there) and just drove it home that way. (OK I pulled over first and scratched my head LOL). Changed jets two steps up and it was fine.

Cars use very little throttle while cruising. Not much Hp need.