The Stovebolt Site Forums The Shop Area Engine Shop Throttle (trim?) Cable to Carb

Hi! I'm putting things back together under the hood of my 53 Chevy truck and I need to know where one of the cables goes to the carb. The one on the back of the carb that goes on a downward angle.

I have the choke where it goes but need to attach the throttle or trim cable. (Is it called throttle? Its the T cable on the dash in the truck...)

I have the support bracket that holds the cable but not sure where the wire hooks into.

Does anyone know? If so, do you have an illustration or picture?

What exactly does it do and how important is it??

Thanks so much.

The T on the knob is for throttle. Originally they had a stud with a hole in it at the carb linkage. The cable had an end with a set screw in it that was to slip when you used the pedal. The idea didn't work very well and usually the throttle cable just dangled. We had use for them because we pumped off gas with a pto, but because they were always broken anyway, we stuck a coin between the stop at the carb and it served the same purpose unless you were penniless. There is a picture of the setup in the GMC maintenance manual 47-54. I can scan the illustration and email it to you.

Oh! Thank you!!

I think I know the hole where the stud should be at the carb linkage. I wonder if I can fashion the wire at the end of the cable tightly around it somehow or if I would definitely need that stud with the screw in it.

Do you need my email addy or can the scan be send thru the Stovebold? Can't remember.

Thanks again!!

oops. I posted a picture. Didn't know it was illegal. Sorry 'bout that!

On a GMC the cable goes through the end of the rod that sticks through the hole you have circled. It was common practice to stick a cotter pin or nail through the hole when the cable broke. There has to be a stop on the end of the cable with a set screw. It was a round brass rod about as big around as a pencil with a hole for the cable and then a set screw to hold it. They usually got lost when the cable broke. I know other machinery uses a similar stop. I just can't think where I saw one last. Chev may have had a seperate stud with a hole in it. GMC Zenith carbs had only one hole. I just went out and looked at a couple of old Chev Rochester carbs. They also have only one hole. The one you picture may have been a replacement that fit cars and trucks and one or the other used a longer stroke; so I feel quite certain that Chev used the same system as GMC The parts book calls the stop a throttle control collar or stop.

Cool! I figured thats where it must go but didn't want to go hooking things up that - well - aren't supposed to be hooked.. lol.

I will get it together and give it a go. Am excited about firing up the ol boy. He hasn't run for about 6 months now. Wish me luck and thanks again!

Yes the throttle linkage rod goes through the hole in the carb linkage. The rod has a hole in the end and the throttle cable inner wire goes through the hole. As a stopper, I use the inside of a connector that is used to join wires in house wiring. I am talking about the type of connector that has a hard plastic shell and an inner brass fitting that screws in. That fitting works perfectly. The throttle is very handy for warming up the motor when you back the choke off.

Some older lighting used brass and all European light fixtures use those. They don't use wire nuts.