Passing gear cable

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87squareHayes

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1987 GMC V1500 5.7 TBI 700r4. Just put a new passing gear cable on, now the cable from the mount to the throttle body is not at the right angle. The old one was fine but this new one is not. It is the original mount but it seems to go more straight than an angle.
 
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87squareHayes said:
1987 GMC V1500 5.7 TBI 700r4. Just put a new passing gear cable on, now the cable from the mount to the throttle body is not at the right angle. The old one was fine but this new one is not. It is the original mount but it seems to go more straight than an angle.
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700r4 doesn't have a passing gear cable. That is a throttle valve cable,it controls transmission line pressure,if not installed and adjusted properly you will cause permanent transmission damage very,very,very quickly.
 
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I don't want to be the one to sound like chicken little,so I'll direct you here to do a little reading.

700R4 TV Cable Adjustment Lies, Bull, and What's the Truth?

I just got my newly rebuilt transmission in WCJr, and I'm struggling with the TV cable adjustment. If you google it, you'll find plenty of f'n morons on YouTube and elsewhere saying that all you need to do is adjust the TV cable to where your transmission 1-2 shifts between 10-15 mph, and 2-3...
www.gmt400.com www.gmt400.com
 
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NickTransmissions

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87squareHayes said:
1987 GMC V1500 5.7 TBI 700r4. Just put a new passing gear cable on, now the cable from the mount to the throttle body is not at the right angle. The old one was fine but this new one is not. It is the original mount but it seems to go more straight than an angle.
Click to expand...
Bad geometry results in poor line rise which will lead to 3-4 clutch and/or 2-4 band failure...Here's some instructions to help you with getting the geometry right. If that cable is no good, replace it with a different cable though I would imagine you can get it set up correctly...Always verify your adjustments with a line pressure test using a transmission pressure gauge that reads from 0-300 PSI.
 
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