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Old 05-11-2019, 08:28 PM   #1
AspecialZ
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Lowering Spindle Help Please

Got these with the latest truck purchase. Cannot tell of they are western chassis and what the drop is supossed to be. I have been on Google for a couple days and researching, but nothing has come up. Can anyone help identify the following...

1. Who built them?
2. 1" or 1.25" rotor
3. Drop 2" or 3"
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Old 05-12-2019, 09:04 AM   #2
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Re: Lowering Spindle Help Please

What year truck?
Those don’t look like 73-87 drop spindles.
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Old 05-12-2019, 11:12 AM   #3
AspecialZ
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Re: Lowering Spindle Help Please

The truck is an 85 c10. I received a c notch kit with them as well as the lowering springs.
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Old 05-12-2019, 09:52 PM   #4
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Re: Lowering Spindle Help Please

look like 88-98-00 style gmt400 spindles by the caliper mount style . and thec3500 on them if i had to take a wild guess there 1ton .
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Old 05-12-2019, 10:01 PM   #5
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Re: Lowering Spindle Help Please

These are the springs I received with the kit as well, can anyone recognize them?
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Old 05-13-2019, 12:02 AM   #6
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Re: Lowering Spindle Help Please

Quote:
Originally Posted by AspecialZ View Post
These are the springs I received with the kit as well, can anyone recognize them?
I would say that's a Western Chassis part number.
Just a guess.
Looks like parts for 88-98.
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Old 05-13-2019, 12:08 AM   #7
AspecialZ
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Re: Lowering Spindle Help Please

Quote:
Originally Posted by lolife99 View Post
I would say that's a Western Chassis part number.
Just a guess.
Looks like parts for 88-98.
Thanks, that's kind of my thoughts too. I'm going to call Western Chassis tomorrow and see if they can validate.
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Old 05-13-2019, 12:42 PM   #8
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Unhappy Re: Lowering Spindle Help Please

I contacted Western Chassis. They could not tell me who built the items...so the search continues...
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Old 05-13-2019, 05:44 PM   #9
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Re: Lowering Spindle Help Please

I would just buy the correct parts for your truck.
These obviously are not going to work on 73-87 truck.
And you need to verify that your ‘85 c10 has 1” or 1.25” rotors before you order drop spindles.
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Old 05-14-2019, 01:13 PM   #10
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Re: Lowering Spindle Help Please

Quote:
Originally Posted by lolife99 View Post
And you need to verify that your 85 c10 has 1 or 1.25 rotors before you order drop spindles.
Just FYI, in addition to rotor thickness, the calipers and inner wheel bearings are different. Pads are the same.

Power brakes that used 1" rotors were referred to as "JB3" systems. Base 1.25" systems were "JD3". JB5 and above gets into larger rear brakes and hydraulic boosters instead of vacuum.
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Old 05-15-2019, 08:31 AM   #11
AspecialZ
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Re: Lowering Spindle Help Please

Quote:
Originally Posted by lolife99 View Post
I would just buy the correct parts for your truck.
These obviously are not going to work on 73-87 truck.
And you need to verify that your 85 c10 has 1 or 1.25 rotors before you order drop spindles.
Yes, currently 1" rotors are on it. It was a v6 truck. Thanks
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