Axle Lengths, Part Numbers - Turbo Dodge Forums : Turbo Dodge Forum for Turbo Mopars, Shelbys, Dodge Daytona, Dodge SRT-4, Chrysler PT Cruiser, Omni and more!

Transmission, Suspension, Brakes, Tires & Wheels This Dodge forum includes modification, tuning, repair, replacement, identification and restoration of manual and automatic transaxles, shifters, torque converters, flexplates, flywheels, ring gears, axles, and differentials including open, friction, and Q. This forum also includes modification, repair, replacement, identification and restoration of the above parts and how to tune them for better traction and handling. Also includes wheel bearings and hubs, wheel studs and nuts, wheel spacers, and other related items. Sponsored by Discount Tire

 
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post #1 of 6 Old 10-25-2018, 12:48 PM Thread Starter
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Axle Lengths, Part Numbers

I've read about axle lengths on this post while trying to figure about a strange issue that sways the whole front end of my 88 Shelby Z.

Apparently, the van axles are about an inch longer than the axles for a G-body.

Auto Zone and Advance list the same part number for a turbo van and a Shelby Z with an extended axle length of 25 5/32 on some of the brands, and different part numbers for other brands.

This makes axle buying confusing. And I'm thinking this could be the problem where the car feels like it's binding up. I'm going to try to measure compression distance at the hub when I try to center the motor next week.

Does anyone have an exact brand and part number for the G-Body driver's side axle and unequal length passenger side (I converted..) from Rock Auto, Auto Zone, and Advance?
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post #2 of 6 Old 10-26-2018, 08:19 AM
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Re: Axle Lengths, Part Numbers

Before condemning/assuming the axleshaft length is not correct be sure the engine is properly centered.
If the R/S engine mount is damaged/broken/sagging or has been removed/replaced for any reason the engine needs to be checked to be sure it is centered.
If the engine is not centered it will stretch one axle while compressing the other.

Other causes of the issue you are describing could be...
1)Binding strut mounts
2)Wheel alignment
3)Tires

Axle Lengths, Part Numbers-driveaxle-alignment-1.jpg

Axle Lengths, Part Numbers-driveaxle-alignment-2.jpg

Axle Lengths, Part Numbers-driveaxle-identification.jpg
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post #3 of 6 Old 10-26-2018, 08:25 PM
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Re: Axle Lengths, Part Numbers

Advance right side (passenger)
New CV Axle Shaft Assembly

Part No. NCV12534

CV Driveshaft Extended Length: 39 1/2" - 39 3/4"

General Note: 100% New CV Axle
w/Unequal Length Shafts


Advance left (driver)

CV Plus
New CV Axle Assembly

Part No. AX-6529

CV Driveshaft Extended Length: 25 1/2"
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post #4 of 6 Old 10-29-2018, 04:35 PM Thread Starter
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Join Date: Jul 2004
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Re: Axle Lengths, Part Numbers

Quote:
Originally Posted by NAJ View Post
Before condemning/assuming the axleshaft length is not correct be sure the engine is properly centered.
If the R/S engine mount is damaged/broken/sagging or has been removed/replaced for any reason the engine needs to be checked to be sure it is centered.
If the engine is not centered it will stretch one axle while compressing the other.

Other causes of the issue you are describing could be...
1)Binding strut mounts
2)Wheel alignment
3)Tires

Attachment 251739

Attachment 251741

Attachment 251743
Yessir. Will be doing all of that after I see how far I can push in each axle.
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post #5 of 6 Old 10-29-2018, 04:36 PM Thread Starter
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Join Date: Jul 2004
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Re: Axle Lengths, Part Numbers

Quote:
Originally Posted by moparracer 35 View Post
Advance right side (passenger)
New CV Axle Shaft Assembly

Part No. NCV12534

CV Driveshaft Extended Length: 39 1/2" - 39 3/4"

General Note: 100% New CV Axle
w/Unequal Length Shafts


Advance left (driver)

CV Plus
New CV Axle Assembly

Part No. AX-6529

CV Driveshaft Extended Length: 25 1/2"
Thanks. Awesome info to have here if, or when (lol), they need to be replaced again.
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post #6 of 6 Old 11-07-2018, 06:11 PM
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Re: Axle Lengths, Part Numbers

From the Cardone website about the new unequal length axle (pn 66-3034):

"New Axle Is Designed To Compensate For Motor Mount Wear And May Be Longer Then Original Unit."

This may account for some of the length issues you have found in your research.
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