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  #1  
Old 01-20-2013, 12:08 AM
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1972 ford f-250 throttle linkage

hello.. i have a 72 f-250 4x4 with a 390 engine and 4 speed manual transmission. the truck is in the final stages of being put back together after replacing the body due to rust. i've been working at putting the throttle linkage back together, but for some reason it keep hanging up. everything moves freelywhen it's apart. please forgive my lack of knowledge on this one. but when i reconnect both halves to this (block) that's bolted to the manifold everything goes into a bind. so may i ask, if it's possible to see a photo of how the linkage is supposted to go together?
thank you for your time
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Old 01-20-2013, 04:30 AM
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Originally Posted by projectdagger View Post
I have a 72 F250 4x4 with a 390/4 speed manual. I've been working at putting the throttle linkage back together, but for some reason it keeps hanging up.

Everything moves freely when it's apart, but when I reconnect both halves to this (block) that's bolted to the manifold everything goes into a bind.

I need to see a photo of how the linkage is supposed to go together.
1964/72 Ford Truck Parts Catalog / Illustration Section 97, Page 24 shows all the linkage in an exploded view.

Fordification has this parts catalog on their website (it's the CD version), or you can get your own CD from hipoparts.com

The usual problem lies with the bellcrank (7A185 in pic) that bolts to the left (drivers) side rear corner of the intake manifold that all the linkage attaches to.

The levers on the bellcrank have nylon bushings that wear causing the linkage to bind up. The bushings are not replaceable, so the bellcrank has to be replaced.

DOTZ-7A185-A .. Bellcrank / 1970/72 F100/350 360/390 w/a M/T / Obsolete ~ If this turns out to be the problem, 10 are available NOS
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  #3  
Old 01-20-2013, 06:24 AM
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The easiest way to fix that Rube Goldberg monkey motion throttle linkage is to replace it with a straight rod from the pedal to the carb. Pick up the rod ends at local hardware and a piece of threaded rod cut to fit. I've done three of my trucks that way. Soooo much simplier.
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Old 01-20-2013, 09:37 AM
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The easiest way to fix that Rube Goldberg monkey motion throttle linkage is to replace it with a straight rod from the pedal to the carb. Pick up the rod ends at local hardware and a piece of threaded rod cut to fit. I've done three of my trucks that way. Soooo much simplier.
2x... here's a pic using a straight rod and ball n stud rod out of a late Dentside.

Click the image to open in full size.
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Old 01-20-2013, 01:48 PM
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I used solid rod on mine, bent the petal side to fit like stock with the original clip and welded thread on the other side and used alittle linkage piece and it's bolted to the carb.

Works great and much better than stock, better throttle response too

Click the image to open in full size.
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Old 01-21-2013, 09:10 AM
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this is a f100 but should be the same . still a FE
Click the image to open in full size.
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Old 01-21-2013, 11:07 AM
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I used a cable/pedal assembly from a 1979 F250. Bolts right in.
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Old 01-21-2013, 12:19 PM
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What happens when the '79's cable snaps? It's obsolete.
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Old 01-21-2013, 10:22 PM
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Do what the others have done and I have done before, install a rod with ball and studs.
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Old 01-23-2013, 11:32 PM
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What happens when the '79's cable snaps? It's obsolete.
Aw yes the "cable" I had to drive home about 25 mile with a sky rope hooked to carb linkage with my hand out the window pulling on it to work the throttle enough to get home..The was on my 70 El Camino that 3 yrs old
with 30,000 miles on it. Yea I see the cable setup all the time at pick n pull and I get a flash back of an bad Sunday afternoon drive....My 3yr old son learned some of daddy's bad words while trying to fix it to get home..My 2cent on cables throttles...
orich
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Old 01-23-2013, 11:40 PM
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Aw yes the "cable" I had to drive home about 25 mile with a sky rope hooked to carb linkage with my hand out the window pulling on it to work the throttle enough to get home..The was on my 70 El Camino that 3 yrs old
with 30,000 miles on it. Yea I see the cable setup all the time at pick n pull and I get a flash back of an bad Sunday afternoon drive....My 3yr old son learned some of daddy's bad words while trying to fix it to get home..My 2cent on cables throttles...
orich
'had a similar incident while crewing my pal's dirt street stock (A GM metric A-body). Broke the throttle cable and ended up with a shoelace from the carb, through the hood and through the mesh windshield. He had to hand throttle it for a 10-lap LCQ.... no, we didn't Q but we didn't get lapped and had a great time laughing in the pits afterwards.

That's racin'.
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Old 01-24-2013, 04:30 AM
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I did one in 1983 with a piece of aircraft control cable and small cable clamps. It was supposed to be a temporary fix, the rancher flew to town and got me in his Supercub. That truck is still running today with that piece of cable for a linkage rod.
BTW, if anyone is dead set on keeping the trapeze, I have a bucket full of the little wonders.
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Old 01-24-2013, 07:22 AM
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Yep, had a cable snap on a '68 Nova. Luckily, I had some binder twine in the trunk. Left the hood slightly up, routed thru the vent window and it got us home for the last ten miles. Didn't get to go very fast but at least we made it without a tow. Terrible GM products, that is why I switched to Ford.
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Old 01-24-2013, 07:36 AM
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Back in the mid 50s I built a hot rod and put a cable on the pedal around a pulley under the dash to the carburetor. Worked great as I remember.
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Old 05-25-2013, 12:15 PM
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D0TZ7A185A vs. D0TZ7A185B

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Originally Posted by MIKES 68 F100 View Post
this is a f100 but should be the same . still a FE
Click the image to open in full size.
Not the same.

It should be SIMILAR.

D0TZ-7A185-A is for trucks that have a Manual Transmission.
D0TZ-7A185-B is for trucks that have an Automatic Transmission.

I can tell by the kick-down rod shown in your picture that you've got an automatic. This means that you have the "dash B" part.

It looks slightly different than the one on one of my trucks (the one with the manual transmission), and the linkage from the pedal rod is hooked to a different part of the bell crank on mine. I suspect your linkage is set up incorrectly, but I'm not certain.

F-100 vs. F-250 shouldn't make a difference for this.
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Last edited by Thipdar; 05-25-2013 at 12:17 PM. Reason: Title change
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Old 05-25-2013, 12:15 PM
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