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Post Info TOPIC: 65-66 Rear lower B control arms, same a 67-70?


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65-66 Rear lower B control arms, same a 67-70?


Are the rear lower control arms the same on a 65 as a 67? 

 

Reason I ask, is I'd like to detail and put 4 arms together pre conversion for a 12 bolt. I'd like to do a 12 4 arm to replace the weak and worn 10 bolt 3 leg (and both are loose!!)

I have a pair of nice 67's lowers from our good member Cliff already. And have one more 65 upper bracket (from cliff).

Thanks Mark



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67' Grande Parisienne. Ex Ottawa USSR Embassy car, 67- 68.
6977017306_dfca361bfc_m.jpg
 


A Poncho Legend!

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The GM parts books says all 65-68 lower arms interchange, together with 69-70 lower arms if it's a 6 cyl 69-70. For some reason 69-70 V8 cars have a different part number.



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1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles "FAKE_66"



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I got some rear lower control arms out of a 68 Parisienne convertible and they had the smaller front bushings. I'm pretty sure it was a V8 car.
The 69 & 70 rear lower control arms I've seen all have the larger front bushings.

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70 2+2 convertible
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Canadian Poncho Superstar!

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cdnpont wrote:

Are the rear lower control arms the same on a 65 as a 67? 

I have a pair of nice 67's lowers from our good member Cliff already. And have one more 65 upper with bracket (from cliff).


 Do the pair of 67 lowers have the smaller front bushing?



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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop
72 GMC Sierra

 

 



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seventy2plus2 wrote:
cdnpont wrote:

Are the rear lower control arms the same on a 65 as a 67? 

I have a pair of nice 67's lowers from our good member Cliff already. And have one more 65 upper with bracket (from cliff).


 Do the pair of 67 lowers have the smaller front bushing?


 Varies



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67' Grande Parisienne. Ex Ottawa USSR Embassy car, 67- 68.
6977017306_dfca361bfc_m.jpg
 


Canadian Poncho Superstar!

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cdnpont wrote:
seventy2plus2 wrote:
cdnpont wrote:

Are the rear lower control arms the same on a 65 as a 67? 

I have a pair of nice 67's lowers from our good member Cliff already. And have one more 65 upper with bracket (from cliff).


 Do the pair of 67 lowers have the smaller front bushing?


 Varies


 What about the nice pair of 67 lowers you have?



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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop
72 GMC Sierra

 

 



A Poncho Legend!

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This is interesting. The parts book says lower front control arm bushing 1965 to 1970, they're all the same. But obviously real life experience overrides the parts book. (I got moderated when I used a different word!!!) They show the outside diameter as being 2.06 inches. They don't show any other front bushing for a 65 to 70 lower control arm.






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1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles "FAKE_66"



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On the spare arms I have, The front bushing is 1 5/8" shell dia. The rear is 2 1/8".

So yes, smaller on these Clint.

arm1.jpgarm2.jpg

 

 



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67' Grande Parisienne. Ex Ottawa USSR Embassy car, 67- 68.
6977017306_dfca361bfc_m.jpg
 


A Poncho Legend!

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4SPEED427 wrote:

This is interesting. The parts book says lower front control arm bushing 1965 to 1970, they're all the same. But obviously real life experience ****** the parts book. (Am I allowed to say *****'*???!!!) They show the outside diameter as being 2.06 inches. They don't show any other front bushing for a 65 to 70 lower control arm.



-- Edited by cdnpont on Saturday 21st of November 2020 03:59:57 PM


 LOL, I've been moderated!



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1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles "FAKE_66"



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I'll change it to "overrides". That's easier on the blood pressure!



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That'll work.



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67' Grande Parisienne. Ex Ottawa USSR Embassy car, 67- 68.
6977017306_dfca361bfc_m.jpg
 


A Poncho Legend!

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So back to those bushings, what's the deal? Why does the parts book say it all the same stuff? I don't get it.

I'm going to dig in the US Chevrolet parts book later tonight, maybe it has some other listing.

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1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles "FAKE_66"



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It would be nice to finally figure this out. And to understand even what the reason for the smaller bushing was.

That being said, does anyone have a single spare 65-66 rear upper? I'll need one.



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67' Grande Parisienne. Ex Ottawa USSR Embassy car, 67- 68.
6977017306_dfca361bfc_m.jpg
 


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Looking through the rock auto resource, the rear uppers/rear lower, rearward are all Moog 6075, 65-70

And the lower forwards are all AC 4561105 or Centric 60262047.

On another site I found Moog SB245 listed at lower rear forward.



-- Edited by cdnpont on Saturday 21st of November 2020 06:40:59 PM

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67' Grande Parisienne. Ex Ottawa USSR Embassy car, 67- 68.
6977017306_dfca361bfc_m.jpg
 


A Poncho Legend!

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This is what you get when you look up the lower front bushing.

2.06" 1962-1970

2.5" 1965-1970

2.7" 1969-1970



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1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles "FAKE_66"



Canadian Poncho Superstar!

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cdnpont wrote:

It would be nice to finally figure this out. And to understand even what the reason for the smaller bushing was.

That being said, does anyone have a single spare 65-66 rear upper? I'll need one.


I have spare upper control arms from 68 - 70 (both freshly removed, or bare but blasted & painted), I've presumed they're the same as 65 - 66.   Are they different?



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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop
72 GMC Sierra

 

 



A Poncho Legend!

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I believe it is, and if the parts book is correct, 65-66 only.

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65-66 are longer I believe. Thanks all the same Clint.



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