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Originally Posted by PKRWUD
I was referring to the new problem, but honestly, I don't see how the carb would create a shudder at cruise, either. Still, anything is possible. I think you should try and solve your new problem before digging into the old one.
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I have broken just about everything you can with transmissions in the last ten years and I have had T.C.'s fail before. The original problem may have to do with the lock up, but my gut is telling me we were on to something with the carb. My knowledge of carbs has always been inferior, until recently when I decided I would learn all I could. PKRWUD, your knowledge of the carbs is incredible, so bear with me on this. Holley advises to use the vacuum gauge to figure out the proper power valve, as they also felt that was my problem when I called the tech line. I have not looked to see which power valve I have at the moment, but I am betting it is the 6.5, more then I need according to Holley. Plus, the new Holey book I bought talks about how the power valve can be responsible for surging under loads. You helped me get rid of the off idle stumble, and the only stumble (I called it a shudder) left is under a load, with my AOD. Makes sense to me that I am on to something there. I may rig the Vacuum gauge up in the car to confirm this.
The new problem....I took off work tomorrow so I can figure this thing out. I am basically going to start the F$($$ thing and let it run til the noise gets louder, or I find it, which ever comes first. If that fails, I am going to do hole shots up and down my street til it becomes apparent what has went bad.
Jester-
Other then the throttle not being perfectly smooth thru slow transitions, the car has been fantastic since I swapped the roller motor in last summer. Starts great, runs strong, idles quietly, but has a great lope to the cam. I had just finally decided I can outsmart the carb gods by fine tuning it, thinking I could get it perfect. One day the thing started making the weird noise, and within 20 minutes I had major power loss in the lower rpms. I will fix it tomorrow or break it, either way I am fed up with it
Ryan