CRG Discussion Forum
Camaro Research Group Discussion => Research Topics & Reports => Topic started by: KurtS on January 23, 2010, 03:04:17 PM
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I just updated the radius rod article, http://www.camaros.org/radiusrod.shtml, with new pics (thanks Ron!) and new information. But we really don't have a lot of clarity in the data, especially for the first cars that used radius rods.
We are looking for more information from any SS, Z, or L30/M20 that was made Dec 66 or later. Especially SS350 cars made in December or January and L30/M20 cars made in December thru March.
You can email the information below to either me or Daniel (CamaroDan@juno.com) or to post it on this thread.
The information that we're looking for is:
1) Build date
2) Model (SS350, L35, L78, Z28, or L30/M20)
3) Does your car have a radius rod? If so, round or rectangular?
4) If not, does it have either the body bracket or the axle bracket?
5) VIN (Feel free to email if you don't want to post it. We need to the VIN to be able to sort and reference the data. It will not be published or released in any form.)
Helpful extra credit (esp for the early SS350 and L30/M20 cars). :)
6) Axle date (e.g. QJ0421G1). See http://www.camaros.org/drivetrain.shtml#axle for the location.
7) Do you have any documentation for the car?
Thanks for the help!!
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The report still could use a better pic of the round bar installed in a car (same angle as the rectangular bar would be great) and some pics of the axle brackets (without a rod installed).
If anyone has a dealer-added bracket/rod, that might be a good pic too. Not sure if pics would show the differences though.
Thanks!
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My car is in pieces so I will get all I can for you.
Buddy
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i have send you the caracteristic of my 67 convertible L30M20.( 129824)
chevrolet camaro F32712667 ST 67 12667 nor 30510
TR 765Z c-2
XDL 2LG 3L
5BO
124677N129824
moteur T1102MK: t tonawada 11 novembre 02 le 02 novembre MK 327 275HP de 67
boite de vitesse R7R06: R = 4-speed Saginaw model du 06 octobre 66
pont : PE1004G( ou C ou 6?)
E
rapport 3.08 10 bolts positraction
CARBURATEUR ROCHESTER QUADRAJET 7027203 DZ 97
DP29865
i can say that i have a 10bolts rear axle with positraction 3.0_ ratio and i have no rod neither support on the axle or the body
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Buddy,
Do you still have the maroon BB?
Philip,
They didn't install a rod on 10 bolt axles and the L30/M20 didn't get a 12 bolt until a couple of months after your car. Thanks!
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Kurt I think you have all the information on my L30/M20 vin#124377L150010. If not let me know and I will get you all I have. Wes
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Wes,
Yup, both brackets were there, but no rod.
David,
Thanks for the axle bracket pics!
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Yes, I still have the Maroon Big Block, Do you already have my info??
Thx
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Buddy,
You sent in the info 10 years ago, but we don't have any axle or rod info. I'll send you an email.
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I am trying to verify if this is the original differential. I snapped some quick pictures and tried to get some numbers
Build Date: 01C
SS350
No radius rod since I have had it
I will PM you my VIN
I have the POP only. Havent found a build sheet (have not looked too hard yet).
QL01116 (Q looks like an O)
(http://i60.photobucket.com/albums/h22/1967RSSS/Camaro/DSCF4196.jpg)
(http://i60.photobucket.com/albums/h22/1967RSSS/Camaro/DSCF4198.jpg)
(http://i60.photobucket.com/albums/h22/1967RSSS/Camaro/DSCF4200.jpg)
(http://i60.photobucket.com/albums/h22/1967RSSS/Camaro/DSCF4202.jpg)
(http://i60.photobucket.com/albums/h22/1967RSSS/Camaro/DSCF4203.jpg)
(http://i60.photobucket.com/albums/h22/1967RSSS/Camaro/DSCF4204.jpg)
(http://i60.photobucket.com/albums/h22/1967RSSS/Camaro/DSCF4205.jpg)
(http://i60.photobucket.com/albums/h22/1967RSSS/Camaro/DSCF4206.jpg)
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I have the following info from my 67 L-35 Coupe
Build Date: 2-E
Round Radius Bar
7N185414
Rear: QU0221G
I have POP and some of the previous owners service records
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Build date- 2B 3L/4P L142305 has the bracket, no rod, no axle bracket. But my mystery is a 10 bolt rear! Could this original? The date lines up perfectly for the car
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Here are some pics of the floor of my 01c 4p car!!! The motor,4spd, 12bolt,have been changed out so there is no longer a rod,but the plate and bolts are still there!!
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inside the car
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It's a 67
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I just updated the radius rod article with pictures that Ronald and David and David and Jared have sent me over the past few years. Some really nice shots of the axle brackets and now the floor bracket.
Photo credits appear when you hover your mouse over the picture - I think I got them all right. :)
http://www.camaros.org/radiusrod.shtml
Thanks guys!
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Just spotted this 12A LOS L48 w/ PG on eBay. States that it has the round radius rod but no pics or axle code. From the ad:
"Front Disc brakes, 12 Bolt Posi, Round Radius Rod, R/S hideaway headlight assembly with relay board and wiring harness"
http://www.ebay.com/itm/Chevrolet-Camaro-Rally-Sport-Super-Sport-1967-camaro-rs-ss-350-/251483478160?forcerrptr=true&hash=item3a8d955890&item=251483478160&pt=US_Cars_Trucks
1967 RS/SS 350/295HP CAMARO
Clean California Title.
VIN: 124377L127692
COWL TAG:
12A M034
ST 67-12637 LOS-11557
TR 765-Z Y-2
W 2MG 3L
4P 5Y
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Kurt, you have the info on my car. I bought it from the original owner in 1984. It is an L48 m-20, 3.73 car. The original owner states that the car was recalled to install the radius rod. It is square, and they didn't use the brkt under the rear seat. There are two bolts and lock washers holding the front radius rod brkt.
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There should be 3 bolts holding the front bracket. Two against the floor and one to the side rail.
Mike
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Pete,
That car was on ebay 2 years ago - same condition. I think that's a very early car.
Buddy,
Thanks, so noted.
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Does anyone know why or when the change of the axle bracket came to play on the Second Design - Rectangular Radius Rod. I've seen two versions, one have a press mark and the other having a hole drilled just above the side dimples? I'm surmising a June of 67 change.
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Does anyone know why or when the change of the axle bracket came to play on the Second Design - Rectangular Radius Rod. I've seen two versions, one have a press mark and the other having a hole drilled just above the side dimples? I'm surmising a June of 67 change.
I assume the square was needed to handle the larger engine torque and also the additional snubber bracket added as a means to limit the rears travel due to spring wind. As for a transition period I don't know when. We can only get a rough approximate from the dates within the assembly manual but that's not exact when it hit the production floor.
The two Camaros I have with original rears are one 'BJ' rear (3:07) stamp dated 0404 for a LOS 4B (April 13th per UOIT) dated trim tag and that has the round bar with no holes provisioned for an additional bracket. That car has the L35 w/TH400. The other rear is a 'QK' (3:31) stamp dated 0331 for a NOR 5B dated trim tag and that has the square bar with the additional bracket for the snubber. That car has the L35 w/4 speed.
Mike
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Mike,
Thats not what I'm asking. I'm referencing cosmetic looks on the bracket welded on the axle tube for the square bar. I've seen some with press marks and another with a hole on the backside of the bracket. It can be viewed on this link http://www.camaros.org/radiusrod.shtml
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On the lower pictures; first picture you can see the circular press marks just below the side notches. And on the last picture you can see the factory hole just above the side notches. Thats what I'm asking about.
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I see the hole now....its dark in the picture where you can't notice it unless you know it's there.
I'll check my car when I get home to see if it has that lone hole in the back.
Mike
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Here is a picture of the 'BJ' rear dated 0404 on the '67 04B LOS L35 w/TH400 transmission.
This has the round radius rod and you can see this has the hole in the rear.
I looked at the 'QK' rear dated 0331 and this has the square rod w/stop bracket. There is no hole on that axle tube bracket.
It would be interesting what the hole was for. Maybe to hold and/or strategically place the bracket on the tube prior to welding?
Could be an interesting poll to add to the CRG article.
Maybe something like:
Date Code Radius Rod Rear Hole
Round/Square Y/N
___________________________________
0331 QK Square N
0404 BJ Round Y
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Yes, it would! Come on guys let us know..
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0126 QL Square No hole
0303 PJ Square Hole
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Sorting on date:
Date Code Radius Rod Rear Hole
Round/Square Y/N
___________________________________
0126 QL Square N
0303 PJ Square Y
0331 QK Square N
0404 BJ Round Y
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Jon,
First, thanks for adding to the research.
I think I see a pattern already between the bracket with the hole vs. the one without it.
From what I see in the CRQ report pictures and on my 2 cars is the one with the hole also has a stepped 'notch' in the very rear of the bracket on the bottom.
The bracket without the hole is flat along that rear edge. Can you confirm if yours are that way too? That would make it sound like there were possibly two suppliers of that part or a change in the way it was stamped and no other meaning for the existence of that hole.
Thank you,
Mike
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You're welcome, Mike. I looked at the axles again and they match up with your observations.
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0320 PU Square Hole
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Date Code Radius Rod Rear Hole
Round/Square Y/N
___________________________________
0126 QL Square N
0303 PJ Square Y
0320 PU Square Y
0331 QK Square N
0404 BJ Round Y
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And for some reason the Firebird apparently used an "I-Beam" section (a couple on eBay right now).
http://www.ebay.com/itm/1967-1968-1969-Firebird-Trams-Am-Camaro-Factory-Traction-Bar-10-12-Bolt-P-SIDE/151309410470?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222008%26algo%3DSIC.MOTORS%26ao%3D1%26asc%3D22854%26meid%3D7200708986215261526%26pid%3D100005%26prg%3D9833%26rk%3D2%26rkt%3D6%26sd%3D151309410470&rt=nc
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Yes they did, and they used two of them on an axle.
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And for some reason the Firebird apparently used an "I-Beam" section (a couple on eBay right now).
http://www.ebay.com/itm/1967-1968-1969-Firebird-Trams-Am-Camaro-Factory-Traction-Bar-10-12-Bolt-P-SIDE/151309410470?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222008%26algo%3DSIC.MOTORS%26ao%3D1%26asc%3D22854%26meid%3D7200708986215261526%26pid%3D100005%26prg%3D9833%26rk%3D2%26rkt%3D6%26sd%3D151309410470&rt=nc
Sold 5-27-14 for $325.00
Paul
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I have seen Birds with the square bar also.
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Does anyone know if the front bracket and the plate welded to the body are the same on a firebird as on a camaro? Looking at the one eBay the bracket does look similar.
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Does anyone know if the front bracket and the plate welded to the body are the same on a firebird as on a camaro? Looking at the one eBay the bracket does look similar.
Yes, those pieces are the same.
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Didn't know that! Thanks! I found a firebird in the junkyard last year that still had the radius rod assembly on it. Going to go this weekend to see if it's still there.
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I thought those plates are now in reproduction.
Mike
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I don't know. I've seen the brackets and radius rods though so I would imagine they are. Anyone know who has them? I am also going to look for parts for my '68 C-10. Just going to have a fun Saturday ;D
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Yep, you're correct. Just saw all the brackets and plate for sale on the Rick's Camaro website.
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12C RSSS L48 with only old style bracket on QK1215G Diff
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Kurt, I recently acquired a 1967 SS 350 (RS package also) with a Powerglide trans.
01D build date
no radius rod
2nd design axle bracket; no body bracket, just the 2 bolts coming thru the floor
VIN is 124377N178723
rear axle is QK 0120 G
unfortunately I have no documentation for it
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Thanks Vince. btw, Your car was on ebay back in 2006 in PA, needing restored.
That's good detail - I don't think we've really chased down the changeover to the 2nd design axle bracket.
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Thanks Kurt for the info on my car. I knew it was owned at some time in the past in PA. I was told that was the second owner. The third owner restored it in MO, and I bought it from him. So as far as I know I am the fourth owner. I had tried to find info about the original owner but to no avail. The NCRS shipping report only shows it going to the Cleveland Zone Office; no original delivery dealer is listed.
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I have a 67 SS/RS with 3.55 12 bolt posi with round radius rod. 01C on build date. Car is 350 with 4 speed. 7N175730 vin
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Build date: first week of April 67
Powertrain: L35 396/TH400
Rear axle: PC 12 bolt 3.31 ratio
Early radius rod
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What's the stamped date on the axle?