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9 bolt pros, does this look correct? (see images)

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Old Aug 25, 2007 | 12:58 PM
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From: Beautiful BC
Car: '88 IROC-Z / '91 Z28 / '91 GTA
Engine: LT4 Hot Cam 305 / L98 355 / MR 383
Transmission: 5-spd / 700R4 / 700R4
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9 bolt pros, does this look correct? (see images)

hey guys..

on my quest for replacement 9 bolt posi cones.. I found these on ebay. they appear to be the right ones, but before I bite the bullet and buy the wrong parts (again) I was hoping for some reassurance and confidence before buying.

whats your opinion? apparently for 28 spline, see images;
Attached Thumbnails 9 bolt pros, does this look correct? (see images)-cones01.jpg   9 bolt pros, does this look correct? (see images)-cones02.jpg  
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Old Aug 26, 2007 | 03:13 PM
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Brisk's Avatar
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From: Beautiful BC
Car: '88 IROC-Z / '91 Z28 / '91 GTA
Engine: LT4 Hot Cam 305 / L98 355 / MR 383
Transmission: 5-spd / 700R4 / 700R4
Axle/Gears: 3:45 / 3:23 / 3:23
Re: 9 bolt pros, does this look correct? (see images)

anyone? do they even look close, or are they way off?
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Old Aug 26, 2007 | 05:04 PM
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From: Palatine, IL
Car: 87 iroc
Engine: 454 .030 over
Transmission: th-350
Axle/Gears: 9 bolt
Re: 9 bolt pros, does this look correct? (see images)

they look close, i dont have any to compare but id say there right from what i saw a while ago
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Old Aug 26, 2007 | 07:50 PM
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From: Ottawa, Ontario
Car: 86 IROC
Engine: LQ4 6.0L
Transmission: T56
Axle/Gears: 3.55 8.8
Re: 9 bolt pros, does this look correct? (see images)

Yah, that's what they look like.
You're better off to machine your old ones down as opposed to installing new ones. Just grind that outside face until you get about 1mm of space from the carrier. New cones will not fit your carrier as well as your old ones. Right now they are already perfectly matched! An machine shop can turn them down. Just reshim them to suit when you put them back in. Do a search for 'rebuilding the 9 bolt' on google. There is a great article somewhere...

Last edited by 6speedIROC; Aug 26, 2007 at 07:56 PM.
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