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Discussion Starter #1
Does anyone have experience with swapping oem front control arms for 70-81 Camaro tubular control arms? Supposed to be an exact fit and more affordable.
 

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try this site:

http://www.p-s-t.com/

I have no experience with them but for the B-Body a set runs about $840
 

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As long as you don't have the 5/8" ball joint knuckles, they'll bolt right in. I've got the SPC F-body lowers in my car, and uppers for that matter.
 

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Is that 5/8" measured at the small end of the taper (threaded end)?
 

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Is that 5/8" measured at the small end of the taper (threaded end)?
Yes, the threaded end of the Balljoint is 5/8" vs the Stock which is 9/16". The other major difference in a 5/8" Balljoint is the Base of the BJ that gets pressed into the Lower Control Arm is also slightly larger.

The 5/8" BJ "setup" requires a different Spindle for the threaded end and a different Control Arm for the BJ to be pressed into. This setup was only available on late 95-96 9C1 cars.

I added this setup years ago so be sure of your setup as these Tubular arms may only be available for 9/16" BJ's. If you have no history on your car, be sure these will fit Hate to see you go "Tubular" and have it all tore apart and realize..."Damn!!" I think some companies offered a 5/8" tobular lower arm but not sure.

Here is my thread on swapping from 9/16 too 5/8 which may help explain all this...

https://www.impalassforum.com/vBulletin/17-suspension/351769-my-5-8-bj-install-pics-tips-part-s.html


EDIT - I can't believe how long ago it was Bill put this thread out there....5 Years ago. Anyway, there is good info there and it looks like Speed tech offers both versions of Control Arms. I updated that thread with a new link to their site...

https://www.impalassforum.com/vBulletin/17-suspension/279683-finally-over-12-years-later-long-after-i-tried-tried.html#post12096140
 

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Is this the correct control arm? https://www.speedwaymotors.com/1970-81-Camaro-Upper-Racing-Control-A-Arm,2122.html

Also, what does this mean: This upper control arm for 1970-1981 Camaro is designed to be used with the stock mount. Available in 8", 8-1/4", 8-1/2", 8-3/4", 9", 9-1/4", 9-1/2". This control arm requires the use of a K6024-style ball joint, which is equivalent a 1963-’71 Chevy pickup style upper ball joint. It will have a 7 degree tapered stud and therefore, the stock Camaro spindle must be reamed to fit the pickup ball joint.

Will these arms require any modification to install on a b-body? Ball joints, spindle, etc.?
 

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You don't want that for a street car. It's basically a disposable control arm for circle track and similar racing, available in those lengths for suspension tuning, and like the description says, you have to ream the top end spindle taper to use the designed-for ball joint. (Stock UBJ is K5208)
 

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Discussion Starter #10
I am wrapping up the install on my CPP Tubular control arms and want to send an update. Let me start by saying I needed to replace the idler arm and some tie rod ends so I bought the 10 or 12 piece HD steering kit as well as the tubular control arms. Controls arms are the same for 80-96 Impala & Caprice, 70-81 Camaro. I only had to use the UBJ from the rebuild kit (simple swap). Other than that the control arms bolted right in. Not quite done yet,, I had to rent a different spring compresser, but will send final pics tomorrow when it’s all buttoned up.
 

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What site did you get the arms from?
 

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After looking all this over I'm now curious. What was the difference in the upper ball joints?
Nice looking setup too.

Mark: Snowman-33
 

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Discussion Starter #14
The tubular control arms matched up really good when I compared them after removing the OEM control arms. I still need to get on an alignment rack (positive camber), but it looks like some shims the uppers will do the trick.
 

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Discussion Starter #15
Sorry,, ball joints. The taper on the shaft where UBJ connects to Spindle on the upper ball joints was slightly larger...
 

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Okay, thanks. I appreciate your schoolin me. Once again I learned something. I'm watching your progress.

Mark: Snowman-33
 

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Got some finished pics? did you get the setup for 5/8 ball joints?
 

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Discussion Starter #18
Sorry guys,, I’ve been trying to wait on this snow to leave so I can get my car to the alignment shop. Dealing with ice storms this week...

As far as ball joints are concerned, I only had to swap the uppers - OEM UBJ bolt right in. See pics attached.

Here is the link for the steering rebuild kit I used: Chevrolet Caprice Impala SS Ball Joint Tie Rod Idler Center Link Kit 1977-1996 https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/181389709731
 

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