three twos

[Phil A.]

1968 vette middle carb of a 3/2 set up with 4 speed- kick down throttle linkage interfers with the valve cover. How do I fix this problem short of cutting the kick down off? Thanks Phil

[Jay G.]

Re: three twos

Are you referring to the factory tripower setup or is this an aftermarket setup?

On my '69 manual tripower there isn't any linkage other than the A/C idle solenoid and the linkage that makes sure that the secondary carbs are closed at idle.

Do you have any pictures you can post?

Regards,

Jay

[Michael B.]

Re: three twos

I don't see any portion of the linkage that is close to the valve cover. "Kick-Down" usually refers to a link, cable or rod, to the automatic transmission. Are you referring to the throttle cable bracket that is attached to the rear carb base bolts on the driver's side?

The secondary linkage is vacuum open on the passenger side and mechanical close on the driver's side. The only other link at the carbs are the fuel lines and the idle solenoid as Jay said.

[Jack C.]

Re: three twos

68 400 hsp.

[Mark K.]

Re: three twos

68 400 hsp.

Wow. I'm not really as familiar with C3 435s (mine is a 67 435), but did GM really hang the return spring on the fuel line?

[Jack C.]

Re: three twos

I believe this is true. Early 68

[Michael B.]

Re: three twos

Wow. I'm not really as familiar with C3 435s (mine is a 67 435), but did GM really hang the return spring on the fuel line?

No, there should be a spring that extends rearward from the throttle shaft to a small hole in the cable bracket.

[Jack C.]

Re: three twos

The short yellow spring, MAY have been on later 68's in addition to the main spring. The orange was on 69's per the TGJM. The main spring is correct on the 68.

[John M.]

Re: three twos

I had this same problem, using a service replacement (67 center carb) on a 69 intake. I cut the piece off. I don't know if the service replacement was for 67 only or for all (with adjustments)
JBMcRae 30025

[Jay G.]

Re: three twos

I had this same problem, using a service replacement (67 center carb) on a 69 intake. I cut the piece off...

John,

Can you be more specific as to what part you cut off?

Jay

[John M.]

Re: three twos

Jay, It was part of the lever on the center carb throttle shaft. It was hitting the valve cover. My original dated 69 center carb did not have it. I'll get a photo tonight and post tomorrow.

[Jay G.]

Re: three twos

Jay, It was part of the lever on the center carb throttle shaft. It was hitting the valve cover. My original dated 69 center carb did not have it. I'll get a photo tonight and post tomorrow.

Thanks. I am curious to see a pic as I have a service carb that has a throttle lever that doesn't look like a production carb. I don't have any problems with my throttle sticking at the moment but maybe I have just been lucky. Hopefully I don't find out the hard way. Getting my accelerator pedal stuck under the floor mat once was exciting enough for me.

Regards,
Jay

[John M.]

Re: three twos

Jay,
The first picture is of a correct 69 L71 carb with the lever attached. The second is a 427 400 with the service carb with the piece of the lever that was hitting cut off.
John

[Phil A.]

Re: three twos

John, you hit the nail on the head, that was exactly what I was asking. Thanks so much, and I thank everyone else for their replys. Phil