Front End Parts/Install - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Normy71 · 01-24-2010, 09:17 PM

I'm in the process of putting my front end back together on my 71 GMC and It's been a while since I took it all a part. I am looking for info on upper& lower Control arm shafts. How tight do I make them? Do they need to be tack welded in place? Any one have the torque specs for this and the rest of the front end bolts and related items?
Thanks

Normy71 · 01-24-2010, 10:56 PM

I found this http://www.chuckschevytruckpages.com...que_specs.html
not sure if this is for my truck?
But upper Control Arm shaft 70lbs
lower Control Arm shaft 115lbs
is this what I should use
Thanks

Normy71 · 01-25-2010, 12:15 PM

Anyone have a link to a build or any kind of help?
Could not find anything,,
Thanks

spr85gmc · 01-25-2010, 01:28 PM

Just did this on my66. I didn't know a arms needed to be torqued to specs so count me in on the need to know...

dfwright · 01-25-2010, 01:53 PM

I have the 1972 Chevrolet Overhaul Service Manual for Cars & Light Duty Trucks book, which specifies 95 foot-lbs for the upper control arm bushings, and 130ft-lbs for the lower. I don't know if it is different for different years or not. I also don't know if GMC is different than Chevy.

If you can find a copy of the 1971 version of this book, it also lists all the torque specs for most of the parts.

Normy71 · 01-26-2010, 02:01 PM

Thanks
I have heard of people tack welding these not sure if it is required?

Heater63 · 01-31-2010, 02:21 AM

I've never heard of a need to tack weld them.
Did you guys replace your shafts or the nuts/bushings? or just replace the seals?
I am cleaning up my shafts and nuts on my 63, about ready to reassemble, and they look fine for re-use to me, but thats just using eyeball inspection. Should the shafts and nuts be replaced with new?

Normy71 · 01-31-2010, 09:40 PM

I just put in all new because I had everything apart.
After 40 years who knows what you have.
My 2 cents.

Normy71 · 01-31-2010, 09:51 PM

Any one have this problem?
My top Arm is rubbing on my drop spindle? It is a 2 1/2" drop from CPP
( CSP4S ) not sure if I have a upper ball joint problems or my new drop spindle need some grinder work? Also my angle on my outer tie rod seems quite steep?
any Input?

texastrendz · 01-31-2010, 10:43 PM

do you have weight of the truck on it, no jacks or jackstands that is

mullit · 01-31-2010, 11:02 PM

X2 and the rest of the truck

Heater63 · 01-31-2010, 11:16 PM

thats Normal Normy: you don't have your rubber bumpers in and you don't have any weight on it. Unless your going airborne with some radical driving

, it will never be an issue, even without bumpers.

Normy71 · 02-01-2010, 10:25 AM

The engine weight is on the frame in picture 2 and 3 but just the 5.3 engine (aluminium ) not sure how many pounds it is?

suville · 02-01-2010, 11:29 AM

Once you "load" the suspension all that will change, like stated in the previous post unless you get it airborne you will never be at that extreme angle.

Normy71 · 02-01-2010, 11:41 AM

I should have said the weight is on the front wheels not the FRAME! but just the weight of the 5.3 only, is how it is sitting in picture 2&3
Thanks

01-24-2010, 09:17 PM	#1
Normy71 Registered User Join Date: Apr 2009 Location: Saskatchewan, Canada Posts: 236	Front End Parts/Install I'm in the process of putting my front end back together on my 71 GMC and It's been a while since I took it all a part. I am looking for info on upper& lower Control arm shafts. How tight do I make them? Do they need to be tack welded in place? Any one have the torque specs for this and the rest of the front end bolts and related items? Thanks __________________ Rolled the dice and lost!! Check Out my 71 build http://67-72chevytrucks.com/vboard/s...d.php?t=375158

01-24-2010, 10:56 PM	#2
Normy71 Registered User Join Date: Apr 2009 Location: Saskatchewan, Canada Posts: 236	Re: Front End Parts/Install I found this http://www.chuckschevytruckpages.com...que_specs.html not sure if this is for my truck? But upper Control Arm shaft 70lbs lower Control Arm shaft 115lbs is this what I should use Thanks __________________ Rolled the dice and lost!! Check Out my 71 build http://67-72chevytrucks.com/vboard/s...d.php?t=375158

01-25-2010, 12:15 PM	#3
Normy71 Registered User Join Date: Apr 2009 Location: Saskatchewan, Canada Posts: 236	Re: Front End Parts/Install Anyone have a link to a build or any kind of help? Could not find anything,, Thanks __________________ Rolled the dice and lost!! Check Out my 71 build http://67-72chevytrucks.com/vboard/s...d.php?t=375158

01-25-2010, 01:28 PM	#4
spr85gmc Registered User Join Date: Jul 2007 Location: san antonio Posts: 648	Re: Front End Parts/Install Just did this on my66. I didn't know a arms needed to be torqued to specs so count me in on the need to know...

01-25-2010, 01:53 PM	#5
dfwright Registered User Join Date: Jan 2009 Location: San Antonio, Texas Posts: 1,376	Re: Front End Parts/Install I have the 1972 Chevrolet Overhaul Service Manual for Cars & Light Duty Trucks book, which specifies 95 foot-lbs for the upper control arm bushings, and 130ft-lbs for the lower. I don't know if it is different for different years or not. I also don't know if GMC is different than Chevy. If you can find a copy of the 1971 version of this book, it also lists all the torque specs for most of the parts. __________________ 1972 C10 LWB, 350/350 Deconstruction began 5/2009, mostly completed restoration, 5/2017 Last edited by dfwright; 01-25-2010 at 01:54 PM. Reason: added info

01-26-2010, 02:01 PM	#6
Normy71 Registered User Join Date: Apr 2009 Location: Saskatchewan, Canada Posts: 236	Re: Front End Parts/Install Thanks I have heard of people tack welding these not sure if it is required? __________________ Rolled the dice and lost!! Check Out my 71 build http://67-72chevytrucks.com/vboard/s...d.php?t=375158

01-31-2010, 02:21 AM	#7
Heater63 Registered User Join Date: Dec 2007 Location: N Texas Posts: 580	Re: Front End Parts/Install I've never heard of a need to tack weld them. Did you guys replace your shafts or the nuts/bushings? or just replace the seals? I am cleaning up my shafts and nuts on my 63, about ready to reassemble, and they look fine for re-use to me, but thats just using eyeball inspection. Should the shafts and nuts be replaced with new? __________________ 292 + TKO500

01-31-2010, 09:40 PM	#8
Normy71 Registered User Join Date: Apr 2009 Location: Saskatchewan, Canada Posts: 236	Re: Front End Parts/Install I just put in all new because I had everything apart. After 40 years who knows what you have. My 2 cents. __________________ Rolled the dice and lost!! Check Out my 71 build http://67-72chevytrucks.com/vboard/s...d.php?t=375158

01-31-2010, 09:51 PM	#9
Normy71 Registered User Join Date: Apr 2009 Location: Saskatchewan, Canada Posts: 236	Re: Front End Parts/Install Any one have this problem? My top Arm is rubbing on my drop spindle? It is a 2 1/2" drop from CPP ( CSP4S ) not sure if I have a upper ball joint problems or my new drop spindle need some grinder work? Also my angle on my outer tie rod seems quite steep? any Input? Attached Images __________________ Rolled the dice and lost!! Check Out my 71 build http://67-72chevytrucks.com/vboard/s...d.php?t=375158

01-31-2010, 10:43 PM	#10
texastrendz Registered User Join Date: Jan 2008 Location: HOUSTON TX Posts: 1,161	Re: Front End Parts/Install do you have weight of the truck on it, no jacks or jackstands that is

01-31-2010, 11:02 PM	#11
mullit Registered User Join Date: Jan 2007 Location: connecticut Posts: 127	Re: Front End Parts/Install X2 and the rest of the truck Last edited by mullit; 01-31-2010 at 11:04 PM.

01-31-2010, 11:16 PM	#12
Heater63 Registered User Join Date: Dec 2007 Location: N Texas Posts: 580	Re: Front End Parts/Install thats Normal Normy: you don't have your rubber bumpers in and you don't have any weight on it. Unless your going airborne with some radical driving, it will never be an issue, even without bumpers. __________________ 292 + TKO500

02-01-2010, 10:25 AM	#13
Normy71 Registered User Join Date: Apr 2009 Location: Saskatchewan, Canada Posts: 236	Re: Front End Parts/Install The engine weight is on the frame in picture 2 and 3 but just the 5.3 engine (aluminium ) not sure how many pounds it is? __________________ Rolled the dice and lost!! Check Out my 71 build http://67-72chevytrucks.com/vboard/s...d.php?t=375158

02-01-2010, 11:29 AM	#14
suville Registered User Join Date: Jun 2003 Location: Mtn. Home, Idaho Posts: 906	Re: Front End Parts/Install *Once you "load" the suspension all that will change, like stated in the previous post unless you get it airborne you will never be at that extreme angle.*

02-01-2010, 11:41 AM	#15
Normy71 Registered User Join Date: Apr 2009 Location: Saskatchewan, Canada Posts: 236	Re: Front End Parts/Install I should have said the weight is on the front wheels not the FRAME! but just the weight of the 5.3 only, is how it is sitting in picture 2&3 Thanks __________________ Rolled the dice and lost!! Check Out my 71 build http://67-72chevytrucks.com/vboard/s...d.php?t=375158



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