lower ball joint mod? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

C-20s · 04-13-2005, 09:44 PM

ok got all the hardware in yesterday and was going to put the front discs i got on tonight but then i read what slammed66 wrote. all my hardware is for a 72 c10. 3 questions. why wont the lower ball joint fit? how do i fix this problem? and last but not least anything else i need to modify?
thanx in advance

jasonrmorrow · 04-13-2005, 10:16 PM

Quote:

one thing You MUST change the lower control arm you cannot fit a 71 and new ball joint into a 66 arm.

I don't know if the control arms are different on a c20 than a c10 but if the upper will fit and the lower wont...then i think you should plan a trip to the junkyard. The lower ones are the easy ones to pull. Theres two small ubolts one near the back(towards cab) and then one up front(nearest the centrelink).

64fleetside · 04-13-2005, 10:59 PM

Check the easy disc brake swap thread in the FAQ. Brian

C-20s · 04-13-2005, 11:23 PM

sorry maybe a little info first. the truck is a 1966 c10 swb. the parts i have are from a 1972 c10. have not tried to bolt this up as i said before. slammed66 said something about the lower ball joints not fitting. wondering why? and how to fix?

jasonrmorrow · 04-14-2005, 06:43 PM

The reason the lower balljoints don't fit is because the hole in the control arm is too small. Get a disc brake control arm up to 1987 and you can do the swap.

carryallnut · 04-16-2005, 12:55 PM

Be extremely careful when you remove the lower A arm. The spring is just waiting to come flying out and WILL cause very serious injuries.

Slammed66 · 04-18-2005, 01:13 AM

hey dude , just like jason said , there is NO way to install a 72 lower ball joint in a 66 lower control arm , you MUSt get a 71 - 87 lowercontrol arm to do the disc brake upgrade.

C-20s · 04-18-2005, 02:02 AM

since i am going to have to change them anyways i guess ill go ahead and order the bag arms. are the tops interchangeable throughout the years? if so ill just order a set of 71 tops and bottoms. thanx

Slammed66 · 04-18-2005, 08:08 PM

yeah man the tops will interchange , if you order the bag arms could ya take some pics Id like to see em.

Demmit_Hemmit's 65 · 04-19-2005, 01:12 AM

Damn.................if The 72 Lower Ball Joint Won't Fit A 66................how Then Was I Able To Put 71 Lower Ball Joints In My 65 Burb????????.....i Did This Swap About 2 Years Ago..........i Know The 65 And 66 Lower Arms Are The Same....................i Thought The 71-72 Were The Same............am I Wrong..................i Took The Front Spindles Of Off A 71 Gmc So I Could Change Over From 6 To 5 Lug.............and Get Disc Brakes At The Same Time........the Lower Ball Joints On The 65 Were Too Short To Fit So I Bought The 71 Lowers And Had Them Pressed In...............also Changed The Uppers To Match The 71......................then I Found Out The Tierod Ends Also Needed To Be Changed Out For The 71's................the Swap Was Pretty Straight Forward And All The Parts Were Easy To Come By At Your Local Parts Store..........................since Then I Have Added Lowering Spindles ..........................ordered Them To Fit A 71..................have Had No Problems With The Swap And Am Happy To Have The Extra Braking Up Front........................hemmit

Slammed66 · 04-19-2005, 01:23 AM

I am confused demmit, the 71 bal joint is definatly lager in diameter, tommarow Im gonna get 2 arms off the shelf at work and look at em side by each , I would have sworn up and down that they are different

04-13-2005, 09:44 PM	#1
C-20s Registered User Join Date: Jul 2004 Location: Clute, tx Posts: 14	lower ball joint mod? ok got all the hardware in yesterday and was going to put the front discs i got on tonight but then i read what slammed66 wrote. all my hardware is for a 72 c10. 3 questions. why wont the lower ball joint fit? how do i fix this problem? and last but not least anything else i need to modify? thanx in advance

04-14-2005, 06:43 PM	#5
jasonrmorrow Registered User Join Date: Mar 2005 Location: Calgary, Alberta Posts: 98	The reason the lower balljoints don't fit is because the hole in the control arm is too small. Get a disc brake control arm up to 1987 and you can do the swap. __________________ 1964 - LWB 350 TPI Fuel Injection On airbags

04-16-2005, 12:55 PM	#6
carryallnut Registered User Join Date: Jul 2004 Location: Southern Cal. Posts: 24	lower A arm Be extremely careful when you remove the lower A arm. The spring is just waiting to come flying out and WILL cause very serious injuries.

04-18-2005, 01:13 AM	#7
Slammed66 Needs a Big Block Join Date: Oct 2003 Location: Red Deer , Alberta Posts: 1,198	hey dude , just like jason said , there is NO way to install a 72 lower ball joint in a 66 lower control arm , you MUSt get a 71 - 87 lowercontrol arm to do the disc brake upgrade. __________________ 1964 Short box On dropmembers and billets 1962 Suburban family cruiser 1972 K10

04-18-2005, 08:08 PM	#9
Slammed66 Needs a Big Block Join Date: Oct 2003 Location: Red Deer , Alberta Posts: 1,198	yeah man the tops will interchange , if you order the bag arms could ya take some pics Id like to see em. __________________ 1964 Short box On dropmembers and billets 1962 Suburban family cruiser 1972 K10

04-13-2005, 10:59 PM	#3
64fleetside Registered User Join Date: Apr 2004 Location: arkieland Posts: 1,070	Check the easy disc brake swap thread in the FAQ. Brian

04-13-2005, 11:23 PM	#4
C-20s Registered User Join Date: Jul 2004 Location: Clute, tx Posts: 14	sorry maybe a little info first. the truck is a 1966 c10 swb. the parts i have are from a 1972 c10. have not tried to bolt this up as i said before. slammed66 said something about the lower ball joints not fitting. wondering why? and how to fix?

04-18-2005, 02:02 AM	#8
C-20s Registered User Join Date: Jul 2004 Location: Clute, tx Posts: 14	since i am going to have to change them anyways i guess ill go ahead and order the bag arms. are the tops interchangeable throughout the years? if so ill just order a set of 71 tops and bottoms. thanx

04-19-2005, 01:12 AM	#10
Demmit_Hemmit's 65 Senior Member Join Date: Mar 2002 Location: Peru, Indiana Posts: 741	Damn.................if The 72 Lower Ball Joint Won't Fit A 66................how Then Was I Able To Put 71 Lower Ball Joints In My 65 Burb????????.....i Did This Swap About 2 Years Ago..........i Know The 65 And 66 Lower Arms Are The Same....................i Thought The 71-72 Were The Same............am I Wrong..................i Took The Front Spindles Of Off A 71 Gmc So I Could Change Over From 6 To 5 Lug.............and Get Disc Brakes At The Same Time........the Lower Ball Joints On The 65 Were Too Short To Fit So I Bought The 71 Lowers And Had Them Pressed In...............also Changed The Uppers To Match The 71......................then I Found Out The Tierod Ends Also Needed To Be Changed Out For The 71's................the Swap Was Pretty Straight Forward And All The Parts Were Easy To Come By At Your Local Parts Store..........................since Then I Have Added Lowering Spindles ..........................ordered Them To Fit A 71..................have Had No Problems With The Swap And Am Happy To Have The Extra Braking Up Front........................hemmit

04-19-2005, 01:23 AM	#11
Slammed66 Needs a Big Block Join Date: Oct 2003 Location: Red Deer , Alberta Posts: 1,198	I am confused demmit, the 71 bal joint is definatly lager in diameter, tommarow Im gonna get 2 arms off the shelf at work and look at em side by each , I would have sworn up and down that they are different __________________ 1964 Short box On dropmembers and billets 1962 Suburban family cruiser 1972 K10

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