Transmissions and Drivetrain Need help with your trans? Problems with your axle?

700r4 shifting at 4000rpm???

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Old Feb 7, 2006 | 09:49 PM
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700r4 shifting at 4000rpm???

is a 4000rmp shift correct on a 700r4?? the tv cable is new & is adjusted per instructions....any ideas?
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Old Feb 8, 2006 | 10:03 PM
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anyone?
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Old Feb 9, 2006 | 05:20 PM
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From: mocksville nc
Car: '68 corvette '73 Corvette
Engine: 427 454
Transmission: TH400
it sounds like the valve is sticking. i was able to get mine "unstuck" by unhooking the cable from the carb, putting it in reverse and pulling it back and forth hard several times. try that before you spend any money on it.
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Old Feb 9, 2006 | 06:11 PM
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did yours do the same thing?
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Old Feb 9, 2006 | 09:04 PM
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From: mocksville nc
Car: '68 corvette '73 Corvette
Engine: 427 454
Transmission: TH400
yes, it would not shift until 3500-4000 rpm's with a new tv cable.

with it in rev. and idling, pull the cable out. you should hear the engine rpm's drop like you are putting it into gear. if you don't then the valve is stuck. it took 10-15 times of pulling it but it finally worked and i have not had any problems since then.
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Old Feb 10, 2006 | 03:12 PM
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From: GA
Car: '90 C1500
Engine: SBC MPFI
Transmission: 4L80e
Axle/Gears: 4.30
could be the governor just set to a low rpm. either buy a 5200rpm unit or recal. it yourself with a B&M kit.
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