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

Shift points keep climbing to higher RPMs...why??

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Old Oct 14, 2003 | 01:58 PM
  #1  
305IrocZ28's Avatar
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Joined: Jun 2001
Posts: 140
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From: Colts Neck, NJ, USA
Car: 1990 IROC-Z
Engine: 305 TPI
Transmission: 700-R4
Shift points keep climbing to higher RPMs...why??

This is a re-post, since I had no replies on the last one. My transmission is shifting at 5200rpm out of 1st and 5000 out of second, whereas it used to do the same at ~4700 and 4500, respectively. Why is it doing this? Any thoughts from anyone would be appreciated.
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Old Oct 22, 2003 | 06:33 AM
  #2  
billhelton's Avatar
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Joined: May 2003
Posts: 52
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From: Tennessee
Car: 85 Sport Coupe
Engine: 355ci
Transmission: TH-350
Try re-adjusting the tv cable. Worked for me.
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Old Oct 22, 2003 | 10:23 AM
  #3  
MdFormula350's Avatar
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Joined: Nov 2001
Posts: 11,634
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From: Maryland; USA
i am in this crowd also, in drive wot from a stop.

1 to 2 is pretty nice at around 4,700

but 2 to drive is way up in the 5,500 range its so high that i sometimes let off the gas alittle bit, by brother is going to try to get his friend to do a side job for me.

trans go shift kit and vette servo.
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Old Oct 22, 2003 | 09:34 PM
  #4  
strokedtpi's Avatar
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Joined: Feb 2003
Posts: 178
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From: Denison and Ames, Iowa
Car: 1990 Formula 350
Engine: 5.7
Transmission: 700R4
yeah i bet that servo will help out that 2-3 shift.
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Old Oct 23, 2003 | 01:32 AM
  #5  
Pro Built Automatics's Avatar
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Joined: Jul 1999
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From: Calimesa, California, U.S.
First, you do not use the TV cable adjustment to change WOT shifts. You want max TV pressure at WOT. To change shift points at WOT you will have to work with the governor, and this is assuming that everything in the valve body is ok. B&M has a governor weight kit to make modifications here. Try this.
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