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Old 09-08-2008, 08:05 AM   #1
Turbo85GMC
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Upper Control Arm Mounting Thread Size

Does anyone know the thread size on the studs that hold the upper control arm to the frame? I needed an impact wrench to get the nuts off because the threads were so rusty. I want to clean up the threads on the studs and nuts so that I can get a good clean reading on the torque wrench when I re-install everything.
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Old 09-09-2008, 09:16 PM   #2
N2TRUX
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Re: Upper Control Arm Mounting Thread Size

Anyone out there have an answer?
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Old 09-09-2008, 10:33 PM   #3
gchemist
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Re: Upper Control Arm Mounting Thread Size

I would not clean them off too much. I brushed mine and reinstalled them. Tight them snuggly. When you get a front end alignment, they'll torque them for you.

Check here http://www.torkspec.com/torkspec.aspx
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Old 09-09-2008, 11:43 PM   #4
smashingchuck
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Re: Upper Control Arm Mounting Thread Size

i believe they are 1/2-20 I will check Wednesday.
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Old 09-10-2008, 06:50 AM   #5
Turbo85GMC
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Re: Upper Control Arm Mounting Thread Size

Thanks for the feedback!
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