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

shifter cable keeps melting

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Old May 24, 2008 | 09:41 PM
  #1  
jay_d's Avatar
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From: NORTH EAST GA
Car: 84 z28
Engine: 355
Transmission: TH350
Axle/Gears: one wheel peel
shifter cable keeps melting

well when the first one did i thought i may have been against the collector tube, wrong. i fixed the second one so there was no way for it to come in contact with the collector, it melted too.......can anyone think of where to buy some heat resistant cover for my shifter cable?
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Old May 24, 2008 | 10:58 PM
  #2  
thunder85's Avatar
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Car: 1988 firebird trans am GTA
Engine: 5.7L w/hsr
Transmission: 700r4
Axle/Gears: posi 3.23
Re: shifter cable keeps melting

umm... i hate to say it but if your cable keeps melting, you are missing something. if routed correctly, there should be nothing even close to hot enough to melt your cable. i would review a haynes or chilton manual for a picture of where its supposed to be routed.
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Old May 24, 2008 | 11:37 PM
  #3  
ZZ28ZZ's Avatar
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Joined: Apr 2002
Posts: 1,353
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From: Austin
Car: 82 Z-28
Engine: 383 TPI
Transmission: 700R4
Re: shifter cable keeps melting

This may sound crazy, and I know it's a long shot, but is it possible your eng is getting it's ground thru the cable? If your eng ground cable isn't connected to the battery or body, it will be looking for another ground. When the starter is engaged, a large amount of current may be traveling thru the shifter cable.

Not sure what kind of exhaust your running, but mine comes nowhere near the shifter cable.
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Old May 24, 2008 | 11:39 PM
  #4  
jay_d's Avatar
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Joined: Sep 2007
Posts: 678
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From: NORTH EAST GA
Car: 84 z28
Engine: 355
Transmission: TH350
Axle/Gears: one wheel peel
Re: shifter cable keeps melting

long tubes, nothing i can do about their proximity to the trans,..........they dont burn the cable in two, they just melt the plastic and make it where i cant get back into park, hasnt melted anything else, just the crappy b&m cable....... fgure wrap it in some kind of heat shielding stuff and should fix the problem, its open headers now so hooking up the exhuast should help getting the tempetures down some......but it still is hot under there, and i will have to drive it to the muffler shop

you stockish guys have it great, non of your stuff comes back and rears its ugly head

Last edited by jay_d; May 24, 2008 at 11:45 PM.
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Old May 25, 2008 | 02:34 AM
  #5  
thunder85's Avatar
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Joined: Sep 2003
Posts: 455
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Car: 1988 firebird trans am GTA
Engine: 5.7L w/hsr
Transmission: 700r4
Axle/Gears: posi 3.23
Re: shifter cable keeps melting

ahh.. now it makes sense.

possibly use that flexable heat shield material they use to wrap starters.. something like that clamped around the cable should offer enough protection to stop it from melting.
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