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I need a LCA length measurment please?

Started by Brads70, January 08, 2011, 05:28:32 PM

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Brads70

January 08, 2011, 05:28:32 PM
Can someone tell me the length of a late B-Body ( 1973 and up) LCA from the center of the Torsion bar socket to the center of the ball joint hole?
I'm from Cuda-Challenger.com and am looking at options for my suspension? I was reading the April 2011 issue of Mopar Action and Firm Feel has a kit  for A.B and E-Bodies that uses late B-Body LCA's so I was just curious as to the length?
Thanks Brad  :2thumbs:

Brads70

#1
January 09, 2011, 01:51:11 PM
 :smilie_help:   anyone?

Mike DC

#2
January 09, 2011, 07:51:03 PM
It's right around 13 inches I think.   

Brads70

#3
January 09, 2011, 08:36:19 PM
Quote from: Mike DC (formerly miked) on January 09, 2011, 07:51:03 PM
It's right around 13 inches I think.   
Thanks, I had heard it was about an 1" longer than the older B,E-Body LCA? Do you have one to measure accurately?

adauto

#4
January 09, 2011, 09:44:11 PM
Brad I got a 73 Charger at the yard if it helps........?
BIGS
Never too many! 70 Chally R/T Convert-70 GTX-68-69-74 Charger-68 Dart GTS

http://a-dauto.com/  http://www.facebook.com/pages/A-D-Truck-and-Auto-Parts/67427352555?ref=hl

Brads70

#5
January 10, 2011, 02:45:40 AM
Quote from: adauto on January 09, 2011, 09:44:11 PM
Brad I got a 73 Charger at the yard if it helps........?
BIGS
Hey thanks!( again! LOL) If you could get a measurement that would clear up some things up!

FLG

#6
January 10, 2011, 03:08:27 AM
Ill try to measure mine tomorrow  :2thumbs:

Mike DC

#7
January 10, 2011, 04:00:54 AM
That 13" number I gave is not exact.  I'm pulling it from memory and it was from a 2nd-gen.


adauto

#8
January 10, 2011, 09:48:56 AM
Brad looks to be about 14 inches give or take a scoche...  :cheers:
Never too many! 70 Chally R/T Convert-70 GTX-68-69-74 Charger-68 Dart GTS

http://a-dauto.com/  http://www.facebook.com/pages/A-D-Truck-and-Auto-Parts/67427352555?ref=hl

HPP

#9
January 10, 2011, 10:02:18 AM
Overall length or center t-bar pivot to center ball joint?

adauto

#10
January 10, 2011, 04:59:18 PM
Quote from: HPP on January 10, 2011, 10:02:18 AM
Overall length or center t-bar pivot to center ball joint?

center to center
Never too many! 70 Chally R/T Convert-70 GTX-68-69-74 Charger-68 Dart GTS

http://a-dauto.com/  http://www.facebook.com/pages/A-D-Truck-and-Auto-Parts/67427352555?ref=hl

Brads70

#11
January 10, 2011, 05:06:14 PM
Quote from: adauto on January 10, 2011, 09:48:56 AM
Brad looks to be about 14 inches give or take a scoche...  :cheers:

OK Thanks Bigs! :2thumbs: That helps! Looks like it's not gonna work in a E-body street car , too long. Unless maybe  if one used custom offset rims.

Brads70

#12
January 10, 2011, 05:14:38 PM
Quote from: Mike DC (formerly miked) on January 10, 2011, 04:00:54 AM
That 13" number I gave is not exact.  I'm pulling it from memory and it was from a 2nd-gen.



Thanks Mike I think E-body are 12.8 long center to center.

Mike DC

#13
January 10, 2011, 07:56:29 PM
Wow, then my recollection was pretty close after all.  The 70-74 E-bodies had the same LCA dimensions as the B-bodies up through 1972.  I'm not sure about the later 3rd-gens (with the rubber-isolated front subframes) but it's possibly the same.   

 

Brads70

#14
January 10, 2011, 08:48:31 PM
Quote from: Mike DC (formerly miked) on January 10, 2011, 07:56:29 PM
Wow, then my recollection was pretty close after all.  The 70-74 E-bodies had the same LCA dimensions as the B-bodies up through 1972.  I'm not sure about the later 3rd-gens (with the rubber-isolated front subframes) but it's possibly the same.   

 
Ya B-Body's up to 72 ( 71-72 are exactly the same) and E-Bodys are the same except for sway bar tabs. I'm told A-Bodys are 3/16 longer( I have a set being shipped to me) and the late B-Body 73 and up are longer still at 14"
( thanks Bigs!) all you need to do is use the correct pivot pin for the chassis used.

adauto

#15
January 10, 2011, 09:16:43 PM
Glad to help anytime!  :cheers:
Never too many! 70 Chally R/T Convert-70 GTX-68-69-74 Charger-68 Dart GTS

http://a-dauto.com/  http://www.facebook.com/pages/A-D-Truck-and-Auto-Parts/67427352555?ref=hl

Mike DC

#16
January 12, 2011, 12:42:45 AM
What was the reason for the growing LCA length on the later B-bodies? 

Brads70

#17
January 12, 2011, 04:43:59 PM
Quote from: Mike DC (formerly miked) on January 12, 2011, 12:42:45 AM
What was the reason for the growing LCA length on the later B-bodies? 



I would guess to improve the suspension geometry? As time went on I suspect the manufacturers realized handling was becoming more important? Build a better mouse trap sort of thing?

Mike DC

#18
January 12, 2011, 07:00:14 PM
Well, there is the spindle difference in the later B-bodies that we encounter when swapping for disc brake retrofits.  Maybe it's to counter that change.  And the tires were probably getting wider on average in the later 70s, which would affect the scrub radius if the kingpin angle didn't change accordingly.   

Brads70

#19
January 12, 2011, 09:54:16 PM
Quote from: Mike DC (formerly miked) on January 12, 2011, 07:00:14 PM
Well, there is the spindle difference in the later B-bodies that we encounter when swapping for disc brake retrofits.  Maybe it's to counter that change.  And the tires were probably getting wider on average in the later 70s, which would affect the scrub radius if the kingpin angle didn't change accordingly.   


Ya I know they are 3/8 taller? Which accounts for the rubber spacer in the k-frame I guess ?
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