I'm wrapping up my carburetor conversion on my 81 F150, 4x4, 4-speed manual.

I replaced the feedback carburetor with a National 1506, that is supposed to be a Carter YFA


The throttle cable seems too long. In comparing the two carburetors, it looks like the old carburetor may have the linkage a bit more to the passenger side. To be a little clearer, it is too long from the bracket mounted on the engine to the carburetor; by an inch or so. With it connected, the pedal is on the floor. When I disconnected it, the cable broke (not related but adds to the fun).

So..

This may sound like a stupid question, but how do you measure for the throttle cable? I'm thinking I can just measure from where it mounts on the bracket to the carburetor mounting point with the throttle closed. If I find a cable with that measurement, it should work, as long as the overall length is right as well. What a pain. I can't believe no one else ran into this when converting from the feedback carburetor.

In looking up part numbers, it looks like the one for an '82 is actually longer than the one listed for an '85 so I'm a little confused. Should I just trust and get one for an '82 that would have had the Carter YFA Non-Feedback? Did they have a different mounting location for the throttle cable end? Mine is to the right of the valve cover.

Tired and confused. Been chasing vacuum leaks with a smoke tester and may have breathed in too much..

** EDIT **

I just got to looking at some other Carter YFA carbs, and it looks like at least on some, the linkage at the carb is rotated so it is more to the right. Is this something that can be adjusted? I'm wondering if I got the wrong carburetor or just need to adjust it..

What a pain..



Any help?

 

I don't have answers to your questions, but I do have a suggestion. We run into this every time we replace the intake with an aftermarket unit on the V8's - or at least the W's and M/400's. The aftermarket intakes relocate the carb to the rear and that makes the linkage too long, which means that you only have the last little bit of travel and don't always get full throttle.

To fix that I cut the bracket that holds the cable. Then I bolt the bottom in half and move the top half until I get it where I want it and clamp it with vise grips. Take it off, weld it up, paint it, and reinstall. Here's a pic of one I did:

 

Thanks. I was thinking a different bracket, so I may do as you said and just fabricate a new one that moves the 'mount' a bit further to the left.

I'm sort of surprised that in all the DS2 conversions being done, no one ran into this when replacing their carburetor. If they did, they never mentioned that in any of their write ups.

This will certainly be a 'gotcha' that I had to mine

 

Hey KsCop,
What did you end up doing with your "too long" accelerator cable?
I've been investigating the reason for my need to always use starting fluid to get her fired up when she's cold. Finally figured out that I wasn't getting the squirt out of my accelerator pump. I knew that it was installed properly, it would squirt when I had it on the bench but wouldn't when installed on the manifold. Took that YFA off 3 times and rebuilt it twice trying to figure it out.
Finally ran across this thread and and sure enough, it seems that my cable is also about 1 1/2" too long ( I'd always wondered why the pedal seemed so close to the floor, thought it had something to do with the carpeting or mats)

So now if I disconnect the cable from the carb linkage I'm able to move the linkage through its full range, the pump squirts and the truck starts just fine!

Obviously that is not a great solution long term, so we're you able to find a shorter cable and if so, what length did you end up with?

Sorry for resurrecting an old thread!

 

We haven't seen him on here in quite a while, so don't hold your breath waiting for a response.

 

2 pics. Upper: Application chart / Lower: Exploded view of the whole enchilada.

 

Thanks Gary

Number Dummy - if I'm reading this correctly, it would seem that a cable for an '80 might work for me. What don't understand is why would there be different sizes for basically the same truck, engine, cab, carb and manifold over that one year?
Was the '80 cab different in some way? Maybe the way the pedal mounted is different on an '80 vs '83/86? And then there's the whole 81/82 mess.

 

Pardon me for being retarded, but does F-U 100/350 mean it fits everything from the F100 throughF350? What I've deduced from your post is that my 1985 Ford F150 1BBL Carter YFA requires E3TZ 9A758-B (a.k.a a 31 inch throttle cable), in which I've chosen to buy .

Am I wrong?

 

Yes F100 - F350
I did not go over the chart that Bill posted but if that is what you come up with then yes.
Dave ----

 

Sorry to bring up an old discussion and maybe I should have started a new thread but I have a question about how these cables are measured.

I have a 83 F350, 460 4 speed with a 4 barrel holley. I currently have an aftermarket throttle cable (one size fits all) on it that is to long and does not fit correctly. I did some mods to the cable and it is working for now. After doing some research on this web site I found that E1TZ-9A758-E is more than likely the part number I need. I bought a NOS one on ebay still in the package. I did not install it yet because, when I measured it end-to-end it measures about 23". If I measure from the carb end to the firewall mount it measures 19 3/4".

Which is the correct way to measure these cables?

Thanks for your help.

 

You bring up a good question?
So the measurements you gave are from the cable installed in the truck now or the NOS one?

What I would do is measure the cable in the truck now both the inner and outer parts and note them.
Then do the same for the NOS one you bought.
Then as a final check look over the chart Bill posted and see if the one he listed for your truck is close to the 2 cables you have and go from there.

When I was looking for a fan shroud I found different places measured them in different ways and would be off anywhere for 1/8" to almost a 1/2".
Made for a fun time (NOT) on finding a shroud.
Dave ----

 

Fuzzface2,

The measurements are from the NOS one. I would have to measure the cable that is currently on the truck.

The chart above shows the part number I bought as being the correct part number. Also on another thread from 2012, NumberDummy listed the same part number (https://www.ford-trucks.com/forums/1...ot-return.html).

Thanks again for the help.