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Old 08-14-2005, 11:40 AM
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700r4 TV Cable Problem

I just finished installing a new 700r4 transmission after my last 700r4 blew up. The tranny is in an older corvette. The TV cable is giving a bit of a problem. I'm using the same cable that was on the car, which is an aftermarket kit.

The "throw" of the TV cable appears to be different on this new transmission. I have a pressure guage hooked up to the trans and I'd like to set the initial pressure between 90 and 110 psi. This is the typical range. I have to extend the TV cable pretty far out to get this reading. So far out it prohibits full throttle.

That is not ideal.

I can't get this at the right pressure & full throttle at the same time. The only thing (I think) that will effect the length of the cable extension is the mechanics by the plunger under the pan. When I had the new & old 700r4 side by side, I noticed the plunger lever and spring looked a bit different. I didn't think about it at the time, but could that be causing my problem? Is it a pressure problem w/ this trans?

This same TV cable worked fine on my old 700r4.

Am I missing anything?

--Jack

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Old 08-14-2005, 08:24 PM
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what year corvette? is it carb or fuel injected?
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Old 08-15-2005, 07:46 AM
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Its a 71 sbc w/406

Right now it has a Holley carb w/ a TV cable setup for Holley's. I'm really beginning to think its a problem with the pressure not buidling fast enough or the plunger linkage.
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Old 08-15-2005, 07:24 PM
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Quote:
Originally Posted by jack71
Its a 71 sbc w/406

Right now it has a Holley carb w/ a TV cable setup for Holley's. I'm really beginning to think its a problem with the pressure not buidling fast enough or the plunger linkage.
well it looks like you have the right bracket setup! tell me about this new 700! where did you get it?
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Old 08-16-2005, 06:30 AM
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I think I have it figured out...

I need a TV Cable Corrector for carbs which is a little spring at hte end of the cable to allow full throttle.

I tranny is from Mad Dog tranmissions in FL. It is a really strong unit, buit to handle 500+ hp. It
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Old 08-16-2005, 07:52 AM
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Why not move the throttle linkage closer to the pivot point?
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Old 01-13-2006, 03:50 PM
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B&M makes a bracket and it corrects the geometry at the carb for TV useage.
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Old 10-25-2006, 08:05 PM
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bowietieoverdrives makes a longer spring to allow the right pressures with aftermarket TV cable setups. you can adjust the tv cable initially to put out the right pressure but once you go WOT it will ratchet out and be out of adjustment again. the new (longer) plunger spring is crucial.
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