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

PLEASE Help with TV Cable…

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Old Apr 2, 2025 | 01:37 PM
  #1  
Chevelle505's Avatar
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5 Year Member
 
Joined: May 2018
Posts: 25
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From: Tennessee (TN)
Car: 87 IrocZ.
Engine: 305 TPI
Transmission: 700R4
PLEASE Help with TV Cable…

Hey guys, I’m wondering if someone has specific info on this. Looking for the proper TV Cable for my car (87 IROC 5.0 TPI) and all I’m finding is this “universal fit” crap..I’m wanting to know the exact part number for the proper cable for a TPI Motor…apparently they’re different between TPI, TBI etc. I’ve got a “universal” one it it now and even with the plunger all the way pushed in she shifts from first to second at 1900rpm under Light throttle. For normal adjustment I push it all the way in, then while holding the tab open to full throttle then release the tab. Still shifts very early. If there’s not an official part number then does someone have an exact length? Really afraid I’m going to toast something in the trans..making me wonder how it “should” shift with “proper” adjustments
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Old May 12, 2026 | 09:09 AM
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RestoRoc89's Avatar
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Joined: Feb 2005
Posts: 121
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From: Ontario, Canada
Car: 1987 Iroc-Z/1993 Z28/2011 Corvette
Engine: 350 CI TPI/355 CI LT1
Transmission: 700R4/D&D Performance T56
Axle/Gears: 3.27 9-bolt/3.73 10-Bolt
Re: PLEASE Help with TV Cable…

Did you ever find an answer to this question? I have an 87 TPI car with ~50,000 miles and what I think it all original parts, but the TV cable is quite slack at idle when adjusted properly for WOT. I figure it has either stretched, is failing to fully return in its sheath (though the total cable range of motion seems right, so I don't think so) or somehow an incorrect cable was installed in the car before I bought it (looks untouched though ...). I want to try a new cable and can't figure out what part I should buy.
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