'73 Vette Q-jet question----Eric? Help!

[Verne_Frantz]

Thanks Eric. The pull off from the vac break is slotted. I'll have to get you the number tomorrow.
This is what I started with. Glad I took pics as it was.




Verne

[VintageMusclecar]

Verne;

That's actually the correct combination. There will either be a slot on the air door shaft or the vacuum break, but not both. Since you said the carb was/is missing the vacuum break rod all together, I'm led to 1 possible conclusion;

The secondary air doors are opening, but MUCH too quickly since the vacuum break isn't connected (the vac. break controls how quickly the air doors open along with the air door spring adjustment).

Hence, bog city.

If you'll notice, the carb is missing the secondary lock-out lever as well, so we know the secondaries aren't being held closed by that.

Get me the #'s from the carb and I'll see if I can't scare up an air door rod and a secondary lock-out lever for you. Check the vacuum break to make sure it still holds too.

How quickly do you need to have the carb wrapped up?

Eric

[WILMASBOYL78]

Just another reason why this guy is the best in the business...always trying to help

[Verne_Frantz]

Eric,
I checked the vac break and it holds good. I'd like to get this done asap because Spring has sprung here; it's in the '60s and he wants to enjoy his car.
The numbers are: main body 7043202 FS with a 0253 date (guessing that's late '70 for a '71 model, and I think it's an auto carb rather than a 4-spd)
Throttle plate # 7881
Air horn: cast inside in a circle 4924

Here's a pic of the other side. I'm not doing any "cosmetic" work on it other than cleaning. It's an unrestored car and he wants to leave it look that way.



Any help you could offer will be greatly appreciated. Oh, by the way, the secondary air valve seems to have a pretty substantial amount of spring tension on it.
Verne

[VintageMusclecar]

Verne;

I have the air door rod and the secondary lock-out lever ready to be boxed up for you.

Give me a call sometime today and I'll get these on the way to you.

Eric

*EDIT*

I just noticed in the pic above this post that there's no curb idle screw in the carb body--is that missing as well, or wasn't it re-installed when you took the pic?

[Verne_Frantz]

Eric,

I don't think there are any other missing pieces. I just haven't put it all back together yet. I'll be in contact soon. Thanks.......

Verne