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Caliper assembly bolt torque

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Old Jun 27, 2025 | 07:43 AM
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Default Caliper assembly bolt torque

What is the torque for assembly bolts C3 rear
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Old Jun 27, 2025 | 08:50 AM
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in assembly manual ..here is 79..cannot be that different for other years. in NM



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Old Jun 27, 2025 | 11:27 AM
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Originally Posted by signify
What is the torque for assembly bolts C3 rear
For bolting the two halves together, torque to 130 lbs/ft.


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Old Jun 27, 2025 | 12:47 PM
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Torque values are for dry threads so if you put any lubricant or never seize on the threads you need to reduce the torque value...

JT
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Old Jun 27, 2025 | 12:48 PM
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Originally Posted by barkingrats
For bolting the two halves together, torque to 130 lbs/ft.

nice. caliper to mounting that high?
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Old Jun 27, 2025 | 02:46 PM
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Originally Posted by interpon
nice. caliper to mounting that high?
That looks way to high, on my 82 service manual it states
Caliper Mounting Bolt 70 ft. lbs.
Caliper Housing Bolt (Front Disk Brakes) 130 ft. lbs.
Caliper Housing Bolt (Rear Disk Brakes) 60 ft. lbs.

I used never seize on the caliper mounting bolts so I torqued them to 45 ft. lbs. as any higher would split the lock washer and I used socket head cap screw lock washers as they were the only ones that fit under the head of the 7/16 bolt which has a unique under size head compared to the rest of normal bolts.

JT
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Old Jun 27, 2025 | 04:53 PM
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Originally Posted by interpon
nice. caliper to mounting that high?
It's from the '67 service manual; copy/paste wasn't a thing back then, so who knows...
Here's the '72 service manual - which is certainly more in line with the comments here for mounting.


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Old Jun 27, 2025 | 07:26 PM
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Originally Posted by barkingrats
It's from the '67 service manual; copy/paste wasn't a thing back then, so who knows...
Here's the '72 service manual - which is certainly more in line with the comments here for mounting.

really shows the size difference too on corvette compared to others!
op pay attention to foot pounds and newton meters. The aim i posted is in nm.
so 80-110nm is around 60-80 ft #..
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Old Jul 2, 2025 | 08:13 AM
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thanks to you all
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Old Jul 2, 2025 | 09:53 AM
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The GM manual shows the front bolt torque for the halves. 130 ft/lb, if you torque the rear half bolts to that you will twist and distort the bolt. tested that many years ago.
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