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On 2007-04-03 11:07, bprigge wrote:
Tracy, go to 74 and possibly 76 primary jets. You should see a big improvement with the 74s, if so and you still got some stumble go to a 76. The single plane intake is doing that to you. Bruce

Increasing your base timing will help it some too but as you know you gotta keep the full advance in the sweet spot.

<font size=-1>[ This Message was edited by: bprigge on 4/4/07 2:29am ]</font>
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I read that increasing the main jets was another possible solution, but not if the main circuit is already tuned. The carb was custom tuned based on my engine and car specs so if I change the jets it may help the off idle stumble but the main circuit may be too rich. Is that a fair assessment? Any other suggestions?

_________________
Tracy Blackford: Corona, Ca
'65 FB Mustang 331, 282S cam, ported 351W heads. T5z, 3.50 9" posi.
346 RWHP@6400 on a warm spring day (335 RWHP SAE corr.)


<font size=-1>[ This Message was edited by: blkfrd on 4/4/07 8:51am ]</font>