Torque Requirements
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Joined: Oct 2007
Posts: 86
Likes: 2
From: Covington, La
Torque Requirements
I'm installing a rear spring, shocks and structs, on an 81' Vette. Does anyone out there know the correct torque requirements for the following:
- rear spring center plate, 3 bolt type
- rear spring mounting bolts, 1 each side
- rear struct bracket, 4 bolts
- rear structs
- rear shocks
Thanks for the help,
Kade
- rear spring center plate, 3 bolt type
- rear spring mounting bolts, 1 each side
- rear struct bracket, 4 bolts
- rear structs
- rear shocks
Thanks for the help,
Kade
Le Mans Master
Joined: Oct 2000
Posts: 7,831
Likes: 5
From: Austin TX
I'm not sure what you mean by "3 bolt" - the spring is bolted to the diff cover by 4 bolts... Those bolts are 70 ft lbs and should only be tightened when the weight of the car is on the tires.
The spring end bolts aren't torqued - set ride height and insert cotter pin.
Strut bracket is 45 ft lbs
Rear shock/strut mount is 75 ft plus line up cotter pin (also tighten when car is sitting).
I don't know the inner strut rod torque - I have Smart Struts...
Rear shock is 50 ft upper, 35 ft lower. Sneak up on the upper bolt - I've had one strip at 50 ft.
Edit: I'm an idiot - an '81 might be different - my values are for the earlier setup.
I just checked the Vette Brakes site and they say their values are through '82
so they're probably right. Check out their page:
http://www.vbandp.com/instructions/h...specsR0102.htm
They differ slightly on some - I looked at their values and the GM values and
compromised...
The spring end bolts aren't torqued - set ride height and insert cotter pin.
Strut bracket is 45 ft lbs
Rear shock/strut mount is 75 ft plus line up cotter pin (also tighten when car is sitting).
I don't know the inner strut rod torque - I have Smart Struts...
Rear shock is 50 ft upper, 35 ft lower. Sneak up on the upper bolt - I've had one strip at 50 ft.
Edit: I'm an idiot - an '81 might be different - my values are for the earlier setup.
I just checked the Vette Brakes site and they say their values are through '82
so they're probably right. Check out their page:
http://www.vbandp.com/instructions/h...specsR0102.htm
They differ slightly on some - I looked at their values and the GM values and
compromised...
Last edited by Steve439; Nov 6, 2007 at 04:19 PM.
