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Old 06-08-2024, 06:11 PM   #1
skokie
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Pitman Arm nut size

Can someone tell me what is the size of the nut that goes on the pitman arm? Pic is attached.
Thanks!
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Old 06-09-2024, 12:05 AM   #2
kwmech
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Re: Pitman Arm bolt size

7/8'' fine thread.........1-5/16'' socket
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Old 06-10-2024, 06:35 PM   #3
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Re: Pitman Arm bolt size

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Originally Posted by kwmech View Post
7/8'' fine thread.........1-5/16'' socket
Thanks!
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Old 06-11-2024, 12:44 PM   #4
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Re: Pitman Arm bolt size

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Originally Posted by kwmech View Post
7/8'' fine thread.........1-5/16'' socket
What would I torque it to?

Thanks!
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Old 06-11-2024, 01:01 PM   #5
71CHEVYSHORTBED402
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Re: Pitman Arm bolt size

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Originally Posted by skokie View Post
What would I torque it to?

Thanks!
The nut is torqued to 100-150 foot lbs. per the service manual, and 175 foot lbs per Moog. 135-140 with oil should be about right, but use search to verify.
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71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025
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Old 06-11-2024, 01:09 PM   #6
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Re: Pitman Arm bolt size

This is the 70 manual, P661. You can get the pdf like I did from this site
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Old 06-16-2024, 05:52 PM   #7
71CHEVYSHORTBED402
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Re: Pitman Arm bolt size

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This is the 70 manual, P661. You can get the pdf like I did from this site
Interesting. I thought I read 100-150 ft. pounds someplace, and your chart made me question that. The assembly manual reads 100-150 ft. lbs., MOOG more than that. In hindsight, I think I'd have torqued it 135ish with oil, not 150.
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Old 06-17-2024, 12:10 PM   #8
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Re: Pitman Arm bolt size

I've always taken them to 120 and never had a problem
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