Help me build a reliable throttle setup (anyone using a linkage?)

My stock pedal had significant side to side play and the bushing was worn out.

I bought and installed a Lokar chrome blingy pedal. Bolted it to the firewall where I wanted it. Then I ran a NEW Lokar throttle cable from the carb to the firewall punched a hole and attached it to the pedal.

Now here is the problem. The throttle pulls downward, so the inner cable moves down in the aluminum housing on the firewall and saws into the aluminum. If I move it down, it then saws at the beginning of the throttle pull. This "sawing" makes the throttle hard as hell to push.

I have seen the Lokar pedals for ford mustangs that mount directly to the firewall, would this work out better? Also seems like it could be braced better?

What about running a Linkage? What pedal would I use for a linkage?

I saw a 32 coupe that had a solid rod inside of a tube that ran from the carb into the firewall, then a cable to the floor mounted pedal from the rod to the clevis. Man it was buttery smoothe.

Any tips on what I should be doing with this thing? What did you do?

 

what about another...stock pedal...

 

I am not so sure my problem is with the pedal more the angle of the dangle if that makes sense. There is no way to get the cable to pull straight from the firewall on any kind of pedal...

 

it doesn't pull straight from the firewall. it's hooked on a bracket on the intake...

 

Got a picture of your current setup?

 

I'm using a stock pedal, with the stock retainer off the stock cable, with a Lokar cable, with no issues, it works great, going on 6 years now.

 

I will go snap some pics real quick like.

 

This is at rest.

 

This is at full swing. I lowered it a bit and have moved it around a few times I can never get it dead on....

 

I definitely see the issue. Was there a reason why you moved the cable from the original firewall position? Maybe coming through the firewall much higher will help on the angle?

 

It had a lokar cable with the stock pedal, Coming through the hole above where mine is now. But it had the same problem, would saw through the aluminum firewall piece.

I now think If I run it straight back from the carb into the firewall and build a angle piece to punch through at a downward angle, that might help.

Then the cable is a straight shot into the firewall and that would remove all the bends?


Maybe I could run a linkage with a pivot through the firewall from the carb, then a cable to the throttle?

It is hard enough to push the pedal that the pedal deflects and the cable mount in the firewall moves. If I go down to 1 spring, coming off high rpm the throttle hangs pretty bad from the vaccum.

 

I'd go back to the stock pedal, and move the cable back up to the stock position.

 

Ditto what Dave said or... Get a longer pivot arm for the pedal and move the cable to a better location to promote proper geometry.

 

Hmmm. So anyone have a picture of their cable from carb to firewall?

I have no idea what is "normal"

 

Here is how the factory V8 cable attaches to the firewall, engine side. Just left of the master cylinder. The sheet metal is angled downward, towards the pedal.