C6 wont shift up into 3rd
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Joined: Feb 2013
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From: Yakima Valley
C6 wont shift up into 3rd
I just rebuilt the 390 in my 70 pickup and the c6 came out with it. I didn't touch the trans besides putting a new front seal on it, but now that I have the truck moving again, I don't get high gear. First to second shift is decent, even though I had to wire the kickdown down so I could drive it until I could get the holley kickdown extension. But I can give it full goose and the trans just won't give me 3rd. Even if I shift it manually it won't give me 3rd. So, do we have any ideas on the problem?
Thread Starter
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Senior User
Joined: Feb 2013
Posts: 168
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From: Yakima Valley
No, it's default position is the Full Throttle setting, and I had to deal with that on the maiden voyage. That was the first problem I ran into, which is why I bailing wired it down so I would actually get a shift between 1 & 2 without having to give it full goose
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