lower control arm install ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

my67chevytruck · 11-12-2008, 10:47 PM

hello, after we did the 72 crossmember swap into the 67 , we blew it apart to rebuild, and install ece drop spindles. The question i have is how do you center the lca on the crossmember, i had rough measurements from the ubolts to the lca front and back on driver and passenger side but these were accidentally thrown away when we cleaned the garage.

i have the lca's loosely installed, do i go ahead and install the spindle loosely and let it dictate the centerpoint via the balljoint shaft? the tighten the lca and install the spring and spindle completely? Thanks for any suggestions.

jlaird · 11-12-2008, 11:10 PM

as far as i know, the lca's can only go on one way. Threre is a dimple in shaft that lines up with a nipple on the crossmember.

texastrendz · 11-12-2008, 11:24 PM

if you are talking about the threaded cups onto the shaft, well, i am having the same problem. no one on this forum could answer that question. what i did is counted the turns on both sides. started it on the threads on each end and did a full turn on each end. it came out pretty much centered. have not taken it to the alignment shop yet. you can still adjust the top for the caster if it is a little off.

my67chevytruck · 11-12-2008, 11:42 PM

Ok Thanks for the info Guys. we overlooked the dimples at first but i noticed it when i crawled under the frame. also noticed it was tweaked a little
like a po hit something, i straightened it best i could and touched it up with chasis black.

jlaird · 11-12-2008, 11:43 PM

I just centered mine. I also brought my control arm to an alignment shop because I was wondering the same thing, so I wanted to ask them. The guy said if he were to align the truck, he wouldnt use the lca threaded shaft as a way to align. I had thought it was used in alignment. Maybe the guy didn't know what he was talking about, but he has been in business for decades.

my67chevytruck · 11-12-2008, 11:54 PM

i thought it was used for alignment as well. we centered the shaft as best we could it's still looks off, but i will have it checked at the alignment shop before it hits the road.

keep Truckin.....

11-12-2008, 10:47 PM	#1
my67chevytruck Under Construction Join Date: Oct 2007 Location: Midlothian,TX (DFW) Posts: 4,555	lower control arm install ? hello, after we did the 72 crossmember swap into the 67 , we blew it apart to rebuild, and install ece drop spindles. The question i have is how do you center the lca on the crossmember, i had rough measurements from the ubolts to the lca front and back on driver and passenger side but these were accidentally thrown away when we cleaned the garage. i have the lca's loosely installed, do i go ahead and install the spindle loosely and let it dictate the centerpoint via the balljoint shaft? the tighten the lca and install the spring and spindle completely? Thanks for any suggestions. __________________ Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470

11-12-2008, 11:10 PM	#2
jlaird Senior Member Join Date: May 2004 Location: johnstown, NY Posts: 2,393	Re: lower control arm install ? as far as i know, the lca's can only go on one way. Threre is a dimple in shaft that lines up with a nipple on the crossmember.

11-12-2008, 11:24 PM	#3
texastrendz Registered User Join Date: Jan 2008 Location: HOUSTON TX Posts: 1,161	Re: lower control arm install ? if you are talking about the threaded cups onto the shaft, well, i am having the same problem. no one on this forum could answer that question. what i did is counted the turns on both sides. started it on the threads on each end and did a full turn on each end. it came out pretty much centered. have not taken it to the alignment shop yet. you can still adjust the top for the caster if it is a little off.

11-12-2008, 11:42 PM	#4
my67chevytruck Under Construction Join Date: Oct 2007 Location: Midlothian,TX (DFW) Posts: 4,555	Re: lower control arm install ? Ok Thanks for the info Guys. we overlooked the dimples at first but i noticed it when i crawled under the frame. also noticed it was tweaked a little like a po hit something, i straightened it best i could and touched it up with chasis black. __________________ Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470

11-12-2008, 11:43 PM	#5
jlaird Senior Member Join Date: May 2004 Location: johnstown, NY Posts: 2,393	Re: lower control arm install ? I just centered mine. I also brought my control arm to an alignment shop because I was wondering the same thing, so I wanted to ask them. The guy said if he were to align the truck, he wouldnt use the lca threaded shaft as a way to align. I had thought it was used in alignment. Maybe the guy didn't know what he was talking about, but he has been in business for decades. Last edited by jlaird; 11-12-2008 at 11:44 PM.

11-12-2008, 11:54 PM	#6
my67chevytruck Under Construction Join Date: Oct 2007 Location: Midlothian,TX (DFW) Posts: 4,555	Re: lower control arm install ? i thought it was used for alignment as well. we centered the shaft as best we could it's still looks off, but i will have it checked at the alignment shop before it hits the road. keep Truckin..... __________________ Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470



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