Cool beans, thanks Ted. Now all I gotta do is remove the original swivel from the bell crank linkage (it's swaged on), bolt an extension to it and fab up a link from there to the carb with all thread. Good weekend project.

The bell crank linkage was extended 2 1/2" - 3" but this was done to get the linkage more level with the carburetor. This did increase the travel of the linkage going from the firewall to the carb in relation to what was taking place with the foot feed. Length of the throttle linkage is the key player here.

Lorena, Texas (South of Waco)

Ted, I know this thread is pretty old but I'm having the same problem. Do you recall how much you had to extend the accelerator linkage to get full throttle?

Good work Dan, wouldn't it be great if all HP gains were that easy?


64F100 57FAIRLANE500

Glad to see it worked out for you Daniel  Carl

So far, so good. We have full travel at any rate. If you want the longer version, visit https://www.hotrodreverend.com/post/1955-ford-part-99-wot-wide-open-throttle-on-the-holley-carburetor




Daniel Jessup

Lancaster, California

aka "The Hot Rod Reverend"
check out the 1955 Ford Fairlane build at www.hotrodreverend.com

Welp, check out these photos... now I remember why I ended up using the Fordomatic linkage - the pivoting arm sits almost parallel to the ground when the pedal is at "idle" so to speak.

at idle...


and then with the accelerator pedal pushed to the floor...



And here is a link to the video I made...



Daniel Jessup

Lancaster, California

aka "The Hot Rod Reverend"
check out the 1955 Ford Fairlane build at www.hotrodreverend.com

Don't forget to use a spring loaded rod that will allow full throtle and then flex to allow more travel to activate kickdown switch.

Ben HessTulsa,OK

Thanks fellas, looks like I am overthinking this one - I will go ahead and fabricate a bracket that I can use on the original firewall pivot. Looks like a simple rod and spring set up would be all that I would need.

Daniel Jessup

Lancaster, California

aka "The Hot Rod Reverend"
check out the 1955 Ford Fairlane build at www.hotrodreverend.com

When I changed my 54 over from a Fordo to a 4 speed (while doing a 312 switch), I got rid of all the linkage except for the part on the firewall.  I ran a rod from that directly to the carb (an Edelbrock).  I did extend the bar sticking up on the firewall linkage which I think gave me more range of motion.  I had to do something similar to what Ted's picture shows, moving the linkage to carb rod over about the same amount as shown in the picture.

Initially, I was going to use a later Fordo linkage with a bolt at the slotted part, but when I really looked everything over I realized  just using the firewall linkage would do it.


54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ