Author Topic: 69 L48 Throttle Linkage (Read 6229 times)

camaronut · « **on:** January 16, 2022, 11:58:49 PM »

Can someone with an original SS 350 / L48 show a picture of what holds the throttle arm to the carb linkage? I would love to see both sides where the the throttle arm is connected to the carb, and how it is connected to stay put.

Thanks in advance!!!

KevinW · « **Reply #1 on:** January 17, 2022, 12:52:34 AM »

I'm subscribing, since I need this info too. I have a straight throttle rod going into a hole with a clip, not sure if this is proper.

Jonesy · « **Reply #2 on:** January 17, 2022, 04:28:55 PM »

I will see if I can get a pic of mine for you

camaronut · « **Reply #3 on:** January 17, 2022, 09:26:17 PM »

Thanks!!! Appreciate it!

Jonesy · « **Reply #4 on:** January 24, 2022, 03:56:26 AM »

Okay sorry for the delay in posting. Heres my throttle linkage. My car is a Van Nuys RS/SS 4 speed car NON Air conditioning car built 11B.

I believe this to be the original one that came on my car. I bought it in 1979 so it was 10 years old, but this was the setup on it then. Im not sure if its in the correct hole on the carb linkage. There are 3 to choose from. Also I know the spring is in the wrong location as it should be on the coil bracket instead of the spark plug wire stand.

Jonesy · « **Reply #5 on:** January 24, 2022, 04:01:32 AM »

Also the correct part number is 3923539. The parts houses carry this, but it is not a straight rod like mine, it has a couple of bends in it. I did find an NOS one that is straight like mine for sale on Yenko site.

camaronut · « **Reply #6 on:** January 24, 2022, 01:14:52 PM »

Thanks Jonesy - appreciate the pics.

On the other side of the carb connection - is the rod held in by a C clip?

As for the rod itself - I have the 3923539 rod, but all I see are the slightly bent / straight ones (like the one you have) on most of the 4BBL cars.....so what is right?

Hope someone chimes in........

KevinW · « **Reply #7 on:** January 24, 2022, 02:18:09 PM »

I have the correct springs bracket (often missing) and straight bar like that one. The spring goes in the inboard very small hole. I will have to get pics of mine later.

Jonesy · « **Reply #8 on:** January 24, 2022, 03:57:08 PM »

Quote from: camaronut on January 24, 2022, 01:14:52 PM

Thanks Jonesy - appreciate the pics.

On the other side of the carb connection - is the rod held in by a C clip?

As for the rod itself - I have the 3923539 rod, but all I see are the slightly bent / straight ones (like the one you have) on most of the 4BBL cars.....so what is right?

Hope someone chimes in........

Nope, it has a cotter key with a washer..

Jonesy · « **Reply #9 on:** January 24, 2022, 04:04:06 PM »

Heres a pic of a known NOS rod. 3293539. This is exactly how my original is.

camaronut · « **Reply #10 on:** January 24, 2022, 05:36:32 PM »

Awesome stuff Jonesy - I appreciate the clarification.
The Camaro parts folks have this item all screwed up. - But you can't argue with NOS.

KevinW · « **Reply #11 on:** January 24, 2022, 09:59:26 PM »

Here is a pic of my linkages. I need to check for that bend, plus move the swivel to a higher hole.

But it shows the small spring bracket that mounts to the coil bracket. I used the double springs, works well

Jonesy · « **Reply #12 on:** January 25, 2022, 04:00:34 PM »

Kevin

I think your throttle rod is correctly attached to the carb. Mine needs to come down to the lower hole and I need to get rid of the washer as that is not needed.

mjsmilford · « **Reply #13 on:** January 25, 2022, 10:02:28 PM »

is there a part number stamped on the rod that Jonesy posted a picture of or is it just a known number?

Jonesy · « **Reply #14 on:** January 25, 2022, 11:05:23 PM »

I do not believe there is a part number stamped into it

camaronut · « **Reply #15 on:** January 25, 2022, 11:37:16 PM »

This is what OER says the 3923539 should look like - there's no way that's right !!!

https://www.ebay.com/itm/393889346241?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818142055%26meid%3D11dd16aacba941d6b677b9424ff43608%26pid%3D101113%26rk%3D2%26rkt%3D12%26sd%3D313738348917%26itm%3D393889346241%26pmt%3D0%26noa%3D1%26pg%3D2563228%26algv%3DDefaultOrganicWeb&_trksid=p2563228.c101113.m2108

Then you have this (which I believe is right):

https://www.ebay.com/itm/334246193835?_trkparms=ispr%3D1&hash=item4dd2a02aab:g:HfsAAOSw~Kdhr6XS&amdata=enc%3AAQAGAAACkPYe5NmHp%252B2JMhMi7yxGiTJkPrKr5t53CooMSQt2orsSprd4IgPv6LBzlteBBg9Pey2cPmJ3MP8ynj9qk4FPYJKP4oACNCfzootj3GXuG1LcO3G37LFICsxxDp3OvGwqcf%252Bi1UdbDznUHcMQeXQ%252FqiyOpTGUbMzlSKoHpHjo%252Blh6hqOlz8nnUK2kDc%252F55SGHKEJ2m0jf2%252B5Pd1K3yNstvP7qq6%252FhWt%252F%252BFA0fxYwYdqRVorr5wKsuaoz6vnxahdZO5IlZA8HeJ1AsLupu4luTeixZV0P8vmyGpwYKBFJjgDBi0L%252F0S7jGCsZTm4OJQ%252BXH%252Febw7YhH1%252FvxNHVAYWD1fUFFF15W673FptBD%252BwJxeC5w6D6uvi7CpG%252FKvGZaktuUygt%252Fmw%252FxtkZLCNXVlI1FQOKzmaYslcT4NAKTbpNs1CvNVF5A4W%252FiX49SK39ePLTQ9gN0ZlXv%252BVetEaPBrnjG3uCHv9x1VfpCPcvrQINPNb7CRDWt8OOhNYtgFyW3ZJQl5c8b%252FKeIv%252B70d4N8eeB3AovqnSDYOuVfaKy09NVtXWewhuY%252FIZ5OjDQn1qAvqYLTG%252FwJQ%252Fw45tN0T2pcbUdHT0vts8g2LfU2kPnnx2ovPRbVbIeEaHH50ozJMXhHjaJ04EZDv8j1HOufXQD6A%252FiLkzNKHPCxVp0SF2xQjlS%252BzfRH92Zugza%252FCLWuPrK%252FXdxOj5ZsDFK8mhPv3diTYUAvedlxK9lr3hVunz3RpUvVKnZ%252FYAMprw%252FYqvmSvVeBOKP9dUSc8105RI%252Bc2wr9WEb8H0nSzsEOcSVyzWuaNez3c8TkUaHDZgaBd8SUk50Ms4PZYvkeMQGHFr%252B0bAlUcZPiKy%252BQrLeEr4ORIj%252F0e26pjLaV%7Cclp%3A2334524%7Ctkp%3ABFBMuoWvudJf

Jonesy · « **Reply #16 on:** January 31, 2022, 04:25:58 PM »

Heres another pic of an NOS L48 throttle rod with the part tag still attached.

Jonesy · « **Reply #17 on:** January 31, 2022, 04:27:06 PM »

Notice there is a slight bend in it about 3 inches from the threaded end.

KevinW · « **Reply #18 on:** February 01, 2022, 05:21:24 PM »

Yes, about the bend... When laying flat, it looks like the bend is also flat. So when mounted to the accel arm does the bend go towards pass side or drivers?

Jonesy, your cotterpin is on the pass side, mine is on the drivers, which is correct? thx

Jonesy · « **Reply #19 on:** February 01, 2022, 06:21:43 PM »

Ha!! Now thats a great question. I looked at some really old pics when I first took my engine out.
The threaded part of the rod was actually up on the linkage coming out of the firewall so maybe it was in backwards?

The L30, which I beleive takes the same rod shows the threaded part on the carb end, but the L48 shows it as the threaded part up by the firewall.
Both illustrations in the AIM show it connected with cotter pin on inside facing pass side.
So I guess the bend has something to do with alignment. I would have to look at it again on my car to see which way the bend makes more sense.

KevinW · « **Reply #20 on:** February 01, 2022, 08:09:35 PM »

I have never seen the threaded part on the firewall side in all the Camaros I took apart. GM wouldn't do that IMO, as if adjusted poorly, the threaded rod would hit the firewall at WOT.

I see the "V8" AIM page 104 has the cotterpin on the pass side. And I see a bend there, it looks like the accel arm is more to the drivers fender that the 2bbl carb throttle arm and the bend gets it back parallel the the CL of engine.

L48 does not have a pic of that so it can be assumed same as 2bbl V8. L-65 pic on page 306 show the same 2bbl pic as a V8, but shows the small bracket for the return spring like a L48. Hmm.

Jonesy · « **Reply #21 on:** February 01, 2022, 10:35:57 PM »

I would have to agree with that assessment. The threaded part would be down by the carb. I think cotter pins are both on pass side.

KevinW · « **Reply #22 on:** February 01, 2022, 11:16:48 PM »

Right! I will have to switch mine and see how the bend works (I found one in my stash)

camaronut · « **Reply #23 on:** February 02, 2022, 01:26:05 AM »

Quote from: KevinW on February 01, 2022, 08:09:35 PM

I have never seen the threaded part on the firewall side in all the Camaros I took apart. GM wouldn't do that IMO, as if adjusted poorly, the threaded rod would hit the firewall at WOT.

I see the "V8" AIM page 104 has the cotterpin on the pass side. And I see a bend there, it looks like the accel arm is more to the drivers fender that the 2bbl carb throttle arm and the bend gets it back parallel the the CL of engine.

L48 does not have a pic of that so it can be assumed same as 2bbl V8. L-65 pic on page 306 show the same 2bbl pic as a V8, but shows the small bracket for the return spring like a L48. Hmm.

I don't see a cotter pin used in the AIM - its a C Clip (retainer). See View A - #4- its part number 9416713. I found an NOS one on eBay, and it ended up too big. - this is where it all started for me.

KevinW · « **Reply #24 on:** February 02, 2022, 01:33:17 AM »

Yes, the C-clip is for the carb side of the rod. Jonesy and I were talking about the firewall end of the rod where it mounts to the accel arm, #7 p/n103373 Pin View B.

I still have original c-clips on my swivels, do you need measurements?

camaronut · « **Reply #25 on:** February 02, 2022, 12:52:46 PM »

No - I'm fine w/o measurements, I just like to find the correct C-clip. I know I could go to any hardware store, but the GM clips had a different profile / internal pattern. (being picky - I know.)

camaronut · « **Reply #26 on:** February 07, 2022, 06:49:37 PM »

I'm hearing crickets!!!!

KevinW · « **Reply #27 on:** February 08, 2022, 01:46:28 PM »

Sounds like everyone wants to keep their c-clips ( I assume that is what you are looking for

)

Jonesy · « **Reply #28 on:** February 09, 2022, 12:13:02 AM »

Maybe try one of the places like heartbeat??

z28z11 · « **Reply #29 on:** February 09, 2022, 02:42:35 AM »

Rod and swivel alternative candidate:

https://fbodywarehouse.com/store/1968-1969-camaro-throttle-rod-with-swivel-327-350-with-4vv-quardajet.html

Firewall end clip per Heartbeat:

https://www.heartbeatcitycamaro.com/13684/67-68-69-Camaro-%26-Firebird-Accelerator-Or-Throttle-Rod-Keyway-Clip-GM%23-103373/

Carb end per GM gr. 3.425:

https://www.ebay.com/itm/382852648870

Quadrajetparts.com has a clip close to the #103373, slightly different profile -

Regards,
Steve

KevinW · « **Reply #30 on:** February 09, 2022, 01:17:59 PM »

The carb end on ebay is actually used for the powerglide kickdown in 1st gen camaros, not the throttle rod, which used a C-clip on carb end and a cotter pin on the firewall side.

z28z11 · « **Reply #31 on:** February 10, 2022, 05:27:45 AM »

Probably has multiple applications. There are two part numbers that fit the description in the parts book (included), no mention of transmission control or Powerglide on this number. Sketchy description, though - anyone have an earlier listing ?

I included two views of the same page just in case the resizing made it a little small.

Regards,
Steve

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Author Topic: 69 L48 Throttle Linkage (Read 6229 times)