'63 Camber rod bracket: Bolt torque
08-22-2015, 04:11 PM
#1
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'63 Camber rod bracket: Bolt torque
I'm finding conflicting information regarding the torque for the bolts which secure the camber rod bracket to the differential. I'd be grateful to anyone who can check their own reference material and let me know what it recommends.
Specifically, the '63 shop manual, in two places, recommends a torque of 15 - 22 ft-lbs. The AIM recommends 40 - 50 ft-lbs, quite a bit different!
The bolts themselves are 3/8", grade 8. For grade 8 bolts, the shop manual torque makes zip-point-zero sense. It's not much more than finger tight. (OK, not my arthritic fingers..... but you get the idea).
On line charts are in pretty good agreement with the recommended torques in the AIM. See:
bolt torque chart
I'm inclined to go with published specs for grade 8 bolts unless there is a compelling reason not to.... such as the iron differential case is really, really soft and 22 ft-lbs is all it will take.
So, bottom line, what does other Corvette reference material say about this?
Thanks in advance,
Jim
Specifically, the '63 shop manual, in two places, recommends a torque of 15 - 22 ft-lbs. The AIM recommends 40 - 50 ft-lbs, quite a bit different!
The bolts themselves are 3/8", grade 8. For grade 8 bolts, the shop manual torque makes zip-point-zero sense. It's not much more than finger tight. (OK, not my arthritic fingers..... but you get the idea).
On line charts are in pretty good agreement with the recommended torques in the AIM. See:
bolt torque chart
I'm inclined to go with published specs for grade 8 bolts unless there is a compelling reason not to.... such as the iron differential case is really, really soft and 22 ft-lbs is all it will take.
So, bottom line, what does other Corvette reference material say about this?
Thanks in advance,
Jim
08-22-2015, 04:17 PM
#2
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I'm finding conflicting information regarding the torque for the bolts which secure the camber rod bracket to the differential. I'd be grateful to anyone who can check their own reference material and let me know what it recommends.
Specifically, the '63 shop manual, in two places, recommends a torque of 15 - 22 ft-lbs. The AIM recommends 40 - 50 ft-lbs, quite a bit different!
The bolts themselves are 3/8", grade 8. For grade 8 bolts, the shop manual torque makes zip-point-zero sense. It's not much more than finger tight. (OK, not my arthritic fingers..... but you get the idea).
On line charts are in pretty good agreement with the recommended torques in the AIM. See:
bolt torque chart
I'm inclined to go with published specs for grade 8 bolts unless there is a compelling reason not to.... such as the iron differential case is really, really soft and 22 ft-lbs is all it will take.
So, bottom line, what does other Corvette reference material say about this?
Thanks in advance,
Jim
Specifically, the '63 shop manual, in two places, recommends a torque of 15 - 22 ft-lbs. The AIM recommends 40 - 50 ft-lbs, quite a bit different!
The bolts themselves are 3/8", grade 8. For grade 8 bolts, the shop manual torque makes zip-point-zero sense. It's not much more than finger tight. (OK, not my arthritic fingers..... but you get the idea).
On line charts are in pretty good agreement with the recommended torques in the AIM. See:
bolt torque chart
I'm inclined to go with published specs for grade 8 bolts unless there is a compelling reason not to.... such as the iron differential case is really, really soft and 22 ft-lbs is all it will take.
So, bottom line, what does other Corvette reference material say about this?
Thanks in advance,
Jim
The '65-'66-'67 A.I.M.'s all show 40-50 ft-lbs. for those four bolts.
08-22-2015, 04:21 PM
#3
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In any event, 40 - 50 it is, then.
Jim
08-22-2015, 04:57 PM
#4
Burning Brakes
Nice catch. I used the 63 shop manual value of 15-22. I just checked the AIM and I'd better up the torque! Thanks!
Brgds,
Rene
BTW; Chiltons 63-82 says 15-22; Chiltons 63-76 says 15-22; Clymer 63-76, says bracket to carrier 35.
Brgds,
Rene
BTW; Chiltons 63-82 says 15-22; Chiltons 63-76 says 15-22; Clymer 63-76, says bracket to carrier 35.
08-22-2015, 08:43 PM
#5
Le Mans Master
Interestingly, the AMA Manuals that were made available this week via the Forum, also say 15-22 lb.ft. 
https://www.corvetteforum.com/forums...y-manuals.html
GUSTO
https://www.corvetteforum.com/forums...y-manuals.html
GUSTO
08-22-2015, 09:48 PM
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Interestingly, the AMA Manuals that were made available this week via the Forum, also say 15-22 lb.ft.
https://www.corvetteforum.com/forums...y-manuals.html
GUSTO
https://www.corvetteforum.com/forums...y-manuals.html
GUSTO
08-22-2015, 10:25 PM
#7
Le Mans Master
08-22-2015, 10:41 PM
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