Thermoquad idling issues

Bewy said

In this order:

[1] Engine idling, look in the primary throttle bores & see if fuel is dripping from the boosters. If yes, that is the problem. Could be poorly seating needle & seats, wrong float level, internal rubber o rings missing or leaking.

[2] Check the spacer/gasket under the carb. Check that it covers ALL the passages in the carb base that cause an air leak. You need to REMOVE it to check it properly.

[3]What are the cam specs?

[4] Report back.

[5] Congrats on using a great carb.

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I will check those things tomorrow. A quick glance earlier in the evening didn’t show any signs of boosters leaking at idle. In order for it to idle, the primaries have to be opened way up.
I am running the Felpro thick 60-273 gasket. When I had it off tonight, it looked like it covered everything, I will check it again tomorrow.

Cam is a comp xe275hl. 231/237 at .050 .525 lift. With the Holley it had between 9.5-10.5 inches of vacuum at an idle. It would jump up to 17-18 at cruise.

Now I have the Carter M6902 fuel pump. On the Holley it had between 6.5-7.5 psi at idle.