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  #21 (permalink)  
Old 11-11-2008, 01:53 PM
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Cobra Make, Engine: ERA 289FIA, 302 from Engine Factory
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Thumbs up Engine Stumbling Issue

Cripe, now you all are going to make a mechanic out of me.......I promise I won't quit my day job, but it'll at least make me warry of that wonderful mechanic who might suggest I need a whole new transmission.....
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  #22 (permalink)  
Old 11-11-2008, 04:10 PM
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Cobra Make, Engine: Shell Valley, 418W, tremec 3550tko, 9" ford rear, 3.0 gear, silver/black
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I backed the initial timing down to 12 degrees (it was @ 18) and raised the fuel level in the secondary float bowl and the problem is much less pronounced. I have not driven it much because of the weather so I am not sure if that fixed it for good!
The QFT carb says that the float levels should be 3/4 up the sight glass. My rear bowl was only 1/3 way up until I moved it!
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  #23 (permalink)  
Old 11-12-2008, 05:42 PM
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Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
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Dwight:
This is the same problem I had with the cobra. No one has mentioned the use of the vacuum gauge on the carb at idle. This is the best way to set the idle air/fuel mixture to either lean or richen it. Bumping his timing up to 40 degrees will definately hurt his power. I used the idle air/fuel mixture to get as much of the stumble out of it as possible. See ya.
Mike
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