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E-Brake Equalizer adjuster thread

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Old 07-05-2012, 12:34 AM
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Car: 1989 IROC Z28
Engine: 305 TBI (L03)
Transmission: 700R4 w/ Corvette servo
Axle/Gears: 4th Gen, 3.23, posi, PBR
E-Brake Equalizer adjuster thread

On an '89 IROC (10 bolt w/ drum brakes), what is the thread on the emergency brake equalizer/adjuster? Is it 1/4-24, 1/4-20, or metric? I've done a search and come up empty.

I'm in the middle of swapping in a '95 posi disc brake rearend and can't get the nylock nut off the threaded rod for the equalizer/adjuster b/c it jams part of the way down. I'd like to run a die up the threaded rod to clean it up but want to be certain what the thread is.

Here's a pic of the threaded end I'm talking about:



Thanks!

Last edited by 89IROCZ28; 07-05-2012 at 01:00 AM. Reason: added pic
Old 07-15-2012, 12:40 PM
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Re: E-Brake Equalizer adjuster thread

My 85 takes a 10 mill. wrench,looks to be a 6 or 8 mill. fine thread
Old 07-16-2012, 07:08 AM
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Car: 1989 IROC Z28
Engine: 305 TBI (L03)
Transmission: 700R4 w/ Corvette servo
Axle/Gears: 4th Gen, 3.23, posi, PBR
Re: E-Brake Equalizer adjuster thread

Yep, it's an 8m x 1 thread. Thanks!

Btw, here's a pic of how we solved the equalizer issue. If the thread hadn't been messed up on the original cable, it might have been long enough as it was.




Last edited by 89IROCZ28; 07-16-2012 at 07:11 AM. Reason: Added info.
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