Upper control arm Bolts! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

desertnick69 · 04-22-2012, 01:22 AM

I have gotten into the front end of my 69 chevy C-20 on a 71 frame. Need to replace it all. The drivers side every thing went smooth (as could be expected) The passanger side i had to cut off the upper control arm bolts.
These bolt are serrated and there is NO backing plate, the holes in the frame seems to be a bit out of round and a bit oversized. Whats the fix? weould send pics but don,t have working camera. Sorry guys)

JimKshortstep4x4 · 04-22-2012, 07:35 PM

If the upper control arm bolts don't fit tightly in the cross member then it could be a problem! The bolts are held in the cross member with a press fit with the splines engaged to prevent the bolts from turning. Replacement bolts are available but it sounds like the cross member holes are too loose too hold them. My suggestion would be to replace the cross member unless there are replacement bolts with larger splines available.

Is the area around the bolts solid or is it rusty?

Here is a photo of the upper a-arm bolts installed in the crossmember for reference just to make sure that we are talking about the same thing.

Jim

desertnick69 · 04-22-2012, 07:59 PM

Where can i get replacement bolts

desertnick69 · 04-22-2012, 08:49 PM

Quote:

Originally Posted by desertnick69

I have gotten into the front end of my 69 chevy C-20 on a 71 frame. Need to replace it all. The drivers side every thing went smooth (as could be expected) The passanger side i had to cut off the upper control arm bolts.
These bolt are serrated and there is NO backing plate, the holes in the frame seems to be a bit out of round and a bit oversized. Whats the fix? weould send pics but don,t have working camera. Sorry guys)

Here are some pics of what I am talking about. te first pic is drivers side the 2nd pic is the passanger side. As u can see they are a bit bigger hole.

fatgump · 04-22-2012, 09:00 PM

Contact forum member t korinek. He is very knowledgeable, has plenty of parts for these trucks and in Arizona. I have bought alot of parts from him and he is good guy.

gysgtc · 04-23-2012, 05:27 AM

lmctruck.com has them. Pg 134 item 8. Other vendors probably sell them also.

04-22-2012, 01:22 AM	#1
desertnick69 Registered User Join Date: Jan 2012 Location: Phoenix, Arizona Posts: 500	Upper control arm Bolts! I have gotten into the front end of my 69 chevy C-20 on a 71 frame. Need to replace it all. The drivers side every thing went smooth (as could be expected) The passanger side i had to cut off the upper control arm bolts. These bolt are serrated and there is NO backing plate, the holes in the frame seems to be a bit out of round and a bit oversized. Whats the fix? weould send pics but don,t have working camera. Sorry guys)

04-22-2012, 07:35 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Upper control arm Bolts! If the upper control arm bolts don't fit tightly in the cross member then it could be a problem! The bolts are held in the cross member with a press fit with the splines engaged to prevent the bolts from turning. Replacement bolts are available but it sounds like the cross member holes are too loose too hold them. My suggestion would be to replace the cross member unless there are replacement bolts with larger splines available. Is the area around the bolts solid or is it rusty? Here is a photo of the upper a-arm bolts installed in the crossmember for reference just to make sure that we are talking about the same thing. Jim Attached Images __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

04-22-2012, 07:59 PM	#3
desertnick69 Registered User Join Date: Jan 2012 Location: Phoenix, Arizona Posts: 500	Re: Upper control arm Bolts! Where can i get replacement bolts

04-22-2012, 09:00 PM	#5
fatgump Registered User Join Date: Apr 2011 Location: Arizona Posts: 249	Re: Upper control arm Bolts! Contact forum member t korinek. He is very knowledgeable, has plenty of parts for these trucks and in Arizona. I have bought alot of parts from him and he is good guy.

04-23-2012, 05:27 AM	#6
gysgtc Registered User Join Date: Apr 2010 Location: Sutton, WV Posts: 340	Re: Upper control arm Bolts! lmctruck.com has them. Pg 134 item 8. Other vendors probably sell them also.



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