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Old 03-24-2009, 08:00 PM
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700R4 trans. shifts to hard

I just bought a 87' chevy silv. 4x4. It has A recent rebuilt jasper engine with a holley 502-6 TBI and shifts really hard from fisrt to second at about 4500rpm. before it shifts it starts to bust up. do i have a shift kit or is it as simple as a vacuum leak?

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Last edited by beltman; 03-24-2009 at 08:05 PM.
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Old 03-24-2009, 08:31 PM
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700R4 Hard shift

Trans TV cable may need adjusting, too tight. The TH700R4 does not have a vacuum modulator. As for busting up may be ignition or ECM not clibrated for the larger TBI.
http://www.tciauto.com/Products/Inst...ble_adjust.htm

Last edited by SSedan64; 03-25-2009 at 08:40 AM. Reason: More Info
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Old 03-24-2009, 08:56 PM
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700r4 also will wind up high rpm and shift extremly hard if the cable is not connected at all

not connected, or not set correctly are both horrible for the trans

dont drive it again until this is corrected

how many miles are on the trans ?

hows the fluid look and smell ?
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Old 03-25-2009, 11:11 PM
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I looked at the truck tonite and noticed the trans. line has a little kink (not collapsed) and a partial burned cable from trans. to the transfer case to close to the exhaust
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