TV linkage for mid '70s Q-jet

[Too Fast]

I got a rebuild kit from Cliff's a few years ago, and it has been working great. 

Now I've had a transmission shop install a 2004R transmission, and apparently I need to get an adapter for the TV cable end at the carb to generate the proper swing/travel/pull.  Is there some adapter I can get to bolt onto the linkage, or do I need to get a primary shaft from like an 80s Monte Carlo (or equivalent) carburetor that already has it?  My shop says this is the problem. 

I think there are other issues with the tranny (lockup clutch won't unlock sometimes, causing the car to stall like when you don't push a clutch pedal in coming to a stop, starts in 2ND gear from a complete stop, won't up shift sometimes, etc), but they are saying this has to be fixed first.

[Frank400]

What is the carburetor number ?  I'm currently working on a 70 Buick carb (7040244) and I had to modify the linkage considerably because it's gonna be  used with a TH200r4.

    Frank.

[77cruiser]

If it's a Chevy carb, good chance that it's good.

[73ss]

Getting an 80's shaft would be you'r best bet. A half ton truck, non-CCC carb would be a good source. The OD carbs do have a different arc/swing then a th-350 carb. They look close but are different. I'm using a 84 C-10 baseplate for my set-up. I'll try to post some part numbers.

[Frank400]

Getting an 80's shaft would be you'r best bet. A half ton truck, non-CCC carb would be a good source. The OD carbs do have a different arc/swing then a th-350 carb. They look close but are different. I'm using a 84 C-10 baseplate for my set-up. I'll try to post some part numbers.

  You're absolutely right about TH350 not having the same arc/swing as an OD carb.  Some exceptions, though.  I don't know why but I came across a few 79 carbs with the same  location as an OD carb.  I know, ODs weren't even available then.  Off the top of my head, one of them carb is 17059217.

     Frank.

[77cruiser]

The 200 came out in 76 & it used  TV cable, so I'm thinking the models that could have had those might have the correct throttle arm.

[Frank400]

The 200 came out in 76 & it used  TV cable, so I'm thinking the models that could have had those might have the correct throttle arm.

   You mean the "metric 200" (non OD) ?  That would mean that 3 speed transmission would have a different arch than the 3 speed th350 ? If so, that explains the carbs I'm talking about.  Good info.

  Frank.

[77cruiser]

The 350 didn't really need the specific arch as it is just a detent cable & doesn't control pressure.
I've used this carb & it is good with a TV cable. If the geometry is per the pic you'll be fine.

http://www.carburetion.com/CarbNumber.asp?Number=7045213

[Too Fast]

I'm getting my Le Mans back tomorrow, I'll get the number then.  I have Cliff's carburetor book, excellent info in there.  I think my best bet is to get a primary throttle shaft from some 80s carb if I can't get the proper arc/swing/travel on the existing.

[77cruiser]

Do you have any pictures of the linkage setup?

[Too Fast]

77crusier,

No pictures yet, but I'm geting my car back today.  I'm going to look at the linkage set-up and see if I can install a mount that will mimic the throw in your diagram.  BTW, I found that diagram and printed it off a few days ago, along with very detailed information about exactly how to set the TV cable.  I'm a professional mechanic by trade, so I should be able to set the cable myself, but I don't have transsmission pressure gauges.  Maybe I'll buy some.  Thank you for helping!  My ultimate solution may be to replace the primary throttle shaft.

[73ss]

 62212 is the # on the throttle arm itself on the carb I'm running. This is correct for an OD. Hopefully you get the tranny figured out. They are a fun unit when working correctly. Let me know if you want a pic. The one I tried to post is to big and I have zero patience for photobucket.

The stalling issue is either a plugged/dirty up lock-up solenoid, or the 12V supply is not being cut when the brakes are applied. Hope this helps.

[Too Fast]

So, here's a picture of my carb linkage setup, if it attaches ok. TV cable at the bottom. I measured from the throttle plate centerline, as best as I can tell it is 1.1" and the throw looks like it mimics the 78° arc for the TV cable. No change in operation, takes off from a stop in 2nd, (unless I manually select first) but does unlock the converter and/or downshift when it's in OD/3rd when I get on it. Still won't upshift out of first by itself on any acceleration over 30% throttle. Frustrating.

My carb number is 17057253, which translates as a 1977 Fed emissions Olds carb.  Works perfectly. 

[77cruiser]

Probably best to get a gauge, usually 2nd gear starts are caused by line pressure being too high at minimum TV. Do you know if the cable is adjusted right? Is it tight at WOT?

[Cliff Ruggles]

The cable should be adjusted so not applying TV at idle, so it shouldn't be starting out in 2nd gear for any reason related to the TV cable adjustment.....Cliff