Torque spec needed
Thread Starter
Drifting
Joined: Jan 2018
Posts: 1,255
Likes: 316
From: Western NY
Torque spec needed
I am reinstalling the steering assembly on my 66 L-79. Gary blueprinted the box and I rebuilt the relay rod (LICS kit), and installed new tie rod ends, idle arm (all Moog parts). What I can not find or read in my AIM is the torque spec for the idle arm to relay rod and pitman arm to relay rod castle nuts. Their both the same size (3/4" socket, between 7/16 and 1/2" threaded section. Almabolt web site shows varying torque specs for generic bolts of the same size based on grade 5, 8, plated or unplated. Spec can vary 20 ft/lbs for the same diameter bolt. Moog goes out of their way to mention the importance of getting this right although they do not provide the spec on the packaging or on any web site I have found.
What do you guys recommend?
What do you guys recommend?
Race Director
Joined: Jul 2018
Posts: 10,550
Likes: 8,327
From: San Antonio, TX/Mahopac, NY
2024 Corvette of the Year Finalist - Modified
2024 Corvette of the Year Finalist - Unmodified
2023 C7 of the Year Winner - Modified
I copied this from this forum several years ago for C2 Corvettes:
ball joint nut, lower 20 ft lbs
ball joint nut, upper 45 ft lbs
ball joint service bolts 20 ft lbs
brake caliper anchor bolt 75 ft lbs
cam sprocket 20 ft lbs
camber cam, rear strut 65 ft lbs
carrier, fronnt support cross bolts 55+key ft lbs
carrier, fronnt support to cross member 65 ft lbs
clutch housing to engine 30 ft lbs
clutch pressure plate 35 ft lbs
collar bolts 40 ft lbs
connecting rod 50 ft lbs
control arm, lower, front 70 ft lbs
control arm, lower, inner pivot nuts 50 ft lbs
control arm, lower, rear 135 ft lbs
control arm, upper, attach nuts 35 ft lbs
cover, timing chain 80 in lbs
crossmember to frame 25 ft lbs
crossmember to carrier 60 ft lbs
damper (balancer) 85 max ft lbs
distributor clamp 10 ft lbs
flywheel to crank 60 ft lbs
head bolts, sb 65 ft lbs
main bearing caps, sb 80 ft lbs
manifold, exhaust, sb 20 ft lbs
manifold, intake, sb 30 ft lbs
motor mount, front, to chassis 30 ft lbs
motor mount, front, to engine 25 ft lbs
motor mount, rear, to cross member 40 ft lbs
motor mount, rear, to transmission 45 ft lbs
oil filter bypass valve 80 in lbs
oil pan engine, all 80 in lbs
oil pan plug 20 ft lbs
oil pump 65 ft lbs
pitman arm to control valve 120-150 ft lbs
pitman arm to steering box 42-47 ft lbs
rebound bumper to frame 20 ft lbs
shock absorber, front, lower bolt 10 ft lbs
shock absorber, front, upper nut 20 ft lbs
shock absorber, rear, lower nut 35 ft lbs
shock absorber, rear, upper nut 50 ft lbs
spark plug 25 ft lbs
spindle, drive, nut 100+key ft lbs
spindle, drive, to axle drive shaft 75 ft lbs
spring link bolt to torque arm keyhole align
spring retainer bolts, rear 65 ft lbs
stabilizer bar link nuts 10 ft lbs
stabilizer bar to frame 10 ft lbs
stabilizer shaft bracket to arm 120 ft lbs
stabilizer shaft bracket to frame 120 ft lbs
stabilizer shaft link bushings 25 ft lbs
starter special bolts 30-40 ft lbs
steering box cover 25 ft lbs
steering box to frame 30 ft lbs
strut rod bracket to carrier 45 ft lbs
strut rod to spindle support 80+key ft lbs
support, drive spindle, to torque arm 30 ft lbs
torque arm pivot 50+key ft lbs
tramsmission to clutch housing 50 ft lbs
universal joint, driveshaft and sb 15 ft lbs
universal joint,bb axle 25 ft lbs
valve cover 50 in lbs
water outlet 20 ft lbs
water pump 30 ft lbs
wheel stud nuts 60 ft lbs
ball joint nut, lower 20 ft lbs
ball joint nut, upper 45 ft lbs
ball joint service bolts 20 ft lbs
brake caliper anchor bolt 75 ft lbs
cam sprocket 20 ft lbs
camber cam, rear strut 65 ft lbs
carrier, fronnt support cross bolts 55+key ft lbs
carrier, fronnt support to cross member 65 ft lbs
clutch housing to engine 30 ft lbs
clutch pressure plate 35 ft lbs
collar bolts 40 ft lbs
connecting rod 50 ft lbs
control arm, lower, front 70 ft lbs
control arm, lower, inner pivot nuts 50 ft lbs
control arm, lower, rear 135 ft lbs
control arm, upper, attach nuts 35 ft lbs
cover, timing chain 80 in lbs
crossmember to frame 25 ft lbs
crossmember to carrier 60 ft lbs
damper (balancer) 85 max ft lbs
distributor clamp 10 ft lbs
flywheel to crank 60 ft lbs
head bolts, sb 65 ft lbs
main bearing caps, sb 80 ft lbs
manifold, exhaust, sb 20 ft lbs
manifold, intake, sb 30 ft lbs
motor mount, front, to chassis 30 ft lbs
motor mount, front, to engine 25 ft lbs
motor mount, rear, to cross member 40 ft lbs
motor mount, rear, to transmission 45 ft lbs
oil filter bypass valve 80 in lbs
oil pan engine, all 80 in lbs
oil pan plug 20 ft lbs
oil pump 65 ft lbs
pitman arm to control valve 120-150 ft lbs
pitman arm to steering box 42-47 ft lbs
rebound bumper to frame 20 ft lbs
shock absorber, front, lower bolt 10 ft lbs
shock absorber, front, upper nut 20 ft lbs
shock absorber, rear, lower nut 35 ft lbs
shock absorber, rear, upper nut 50 ft lbs
spark plug 25 ft lbs
spindle, drive, nut 100+key ft lbs
spindle, drive, to axle drive shaft 75 ft lbs
spring link bolt to torque arm keyhole align
spring retainer bolts, rear 65 ft lbs
stabilizer bar link nuts 10 ft lbs
stabilizer bar to frame 10 ft lbs
stabilizer shaft bracket to arm 120 ft lbs
stabilizer shaft bracket to frame 120 ft lbs
stabilizer shaft link bushings 25 ft lbs
starter special bolts 30-40 ft lbs
steering box cover 25 ft lbs
steering box to frame 30 ft lbs
strut rod bracket to carrier 45 ft lbs
strut rod to spindle support 80+key ft lbs
support, drive spindle, to torque arm 30 ft lbs
torque arm pivot 50+key ft lbs
tramsmission to clutch housing 50 ft lbs
universal joint, driveshaft and sb 15 ft lbs
universal joint,bb axle 25 ft lbs
valve cover 50 in lbs
water outlet 20 ft lbs
water pump 30 ft lbs
wheel stud nuts 60 ft lbs
Race Director
Joined: Jul 2018
Posts: 10,550
Likes: 8,327
From: San Antonio, TX/Mahopac, NY
2024 Corvette of the Year Finalist - Modified
2024 Corvette of the Year Finalist - Unmodified
2023 C7 of the Year Winner - Modified
I actually thought those were perhaps reversed? The pitman arm to steering box torque (large sector shaft nut) is 120-150 and the pitman arm to relay rod torque is 42-47 ft-lbs.
Best let one of the experts chime in here just to be safe. Unfortunately, my ‘66 manual is in NY or I would look it up.
Best let one of the experts chime in here just to be safe. Unfortunately, my ‘66 manual is in NY or I would look it up.
Thread Starter
Drifting
Joined: Jan 2018
Posts: 1,255
Likes: 316
From: Western NY
I actually thought those were perhaps reversed? The pitman arm to steering box torque (large sector shaft nut) is 120-150 and the pitman arm to relay rod torque is 42-47 ft-lbs.
Best let one of the experts chime in here just to be safe. Unfortunately, my ‘66 manual is in NY or I would look it up.
Best let one of the experts chime in here just to be safe. Unfortunately, my ‘66 manual is in NY or I would look it up.
Team Owner
Joined: Sep 2003
Posts: 20,179
Likes: 673
From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Twist it tight and align the cotter key hole. Do not back off the nut to align the hole.
You can check it with a torque wrench. Prolly come to 50 lbs more or less. Thats plenty.
You can check it with a torque wrench. Prolly come to 50 lbs more or less. Thats plenty.
Race Director
Joined: May 2000
Posts: 12,712
Likes: 2,270
This is why I always rag on guys to get the complete set of service manuals for their year, the AIM, and download the AMA specs from the GM Heritage Web site
Some appear to be offended by my admonishment.
Duke
Last edited by SWCDuke; Dec 4, 2021 at 02:52 PM.
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Thread Starter
Drifting
Joined: Jan 2018
Posts: 1,255
Likes: 316
From: Western NY
No worries here Duke, I have thick skin and am very well aware that I don't know what I don't know. If it weren't for this forum I'd probably be driving a Miata.
To your point I do also have the Chassis Service and Overhaul Manuals in addition to AIM and Service Manuals. It was in the Chassis Service manual that I found the spec I mentioned earlier with Factoid although it is for the Pitman to power valve as opposed to relay rod spec. I'm assuming they would be the same. No mention anywhere that I have looked for the idle arm/relay spec but again I am assuming they are the same. I have not downloaded the AMA data you referenced and will look to do that.
Thanks
To your point I do also have the Chassis Service and Overhaul Manuals in addition to AIM and Service Manuals. It was in the Chassis Service manual that I found the spec I mentioned earlier with Factoid although it is for the Pitman to power valve as opposed to relay rod spec. I'm assuming they would be the same. No mention anywhere that I have looked for the idle arm/relay spec but again I am assuming they are the same. I have not downloaded the AMA data you referenced and will look to do that.
Thanks
Le Mans Master
Joined: Dec 2004
Posts: 5,394
Likes: 2,767
From: Pittsburgh
2024 C2 of the Year Finalist - Modified
2023 C2 of the Year Finalist - Modified
2022 C2 of the Year Finalist - Unmodified
2019 C1 of Year Finalist (appearance mods)
"According to the 1967 Chevrolet Service Manual, Corvette wheel stud torque is 75 lb-ft. It is the same for both rallyes and aluminum bolt-ons."
SOURCE:
https://www.corvetteforum.com/forums...que-specs.html
80 is too High....65 is not enough!
SOURCE:
https://www.corvetteforum.com/forums...que-specs.html
80 is too High....65 is not enough!
Melting Slicks
Joined: May 2003
Posts: 2,840
Likes: 301
From: Bonita CA
"According to the 1967 Chevrolet Service Manual, Corvette wheel stud torque is 75 lb-ft. It is the same for both rallyes and aluminum bolt-ons."
SOURCE:
https://www.corvetteforum.com/forums...que-specs.html
80 is too High....65 is not enough!
SOURCE:
https://www.corvetteforum.com/forums...que-specs.html
80 is too High....65 is not enough!
Last edited by 2KREDVert; Dec 5, 2021 at 08:48 PM.