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Old 09-08-2020, 07:40 PM
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Default Accelerator Pedal Position?

On a C3, where is the accelerator pedal height in relation to the brake pedal? Seems like on most modern cars, it is much lower than the brake pedal and I don't have any stock C3's around to compare. I am using a late 90's TPI throttle body that has a cam operated through a cable drive and that requires 2 inches of pull on the cable. That would put my accelerator pedal about 1/2 inch lower than the brake pedal.

I think a C3 w/ carb is 1 1/2 inch travel distance which would lower the pedal to more than 1 inch below the brake pedal.
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Old 09-09-2020, 12:08 AM
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Superbuickguy just posted some photos the other day. Post 1032 might work for you.
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Old 09-09-2020, 06:37 PM
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My gas pedal is almost exactly 1 inch lower than the brake pedal.


I did have to bend the upper arm a few years ago to get the throttle blades to open completely when the pedal was on the floor, which ended up raising the pedal a touch at zero throttle position.

I've since had the intake off, so I think I'll double check that the linkage is still opening the throttle 100%.
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Old 09-10-2020, 10:22 AM
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Mike, when you are checking the travel, can you measure the distance?
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Old 09-10-2020, 03:59 PM
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Quote:
Originally Posted by BBShark View Post
Mike, when you are checking the travel, can you measure the distance?
No problem. I'm assuming you are just looking for the distance from the bottom side of the pedal to the floor (or the travel of the cable at the throttle also)?
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Old 09-10-2020, 04:20 PM
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I'm interested in the travel of the cable. I need 2" and my only "adjustment" is like you said, bending the rod.
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Old 09-11-2020, 11:09 PM
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Quote:
Originally Posted by BBShark View Post
I'm interested in the travel of the cable. I need 2" and my only "adjustment" is like you said, bending the rod.
The cable on my carb moves 1 3/8" from idle to WOT.

I suspect there is more cable movement possible, as this measurement is limited by the carb, not the cable.
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Old 09-12-2020, 12:02 AM
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You can add a block/spacer under the pedal pivot point to get more throw. 1/2 or 3/4 will give you more stroke. I did something like that in the camaro.
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Old 09-13-2020, 10:38 AM
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I'm guessing the idea behind the gas pedal being closer to the floor (than the brake pedal) is to keep you from accidentally stomping both pedals in a panic stop? I think I can get 2" of cable travel if the pedal is about 1/2" below the brake pedal.

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Old 09-14-2020, 01:37 AM
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Quote:
Originally Posted by BBShark View Post
I'm guessing the idea behind the gas pedal being closer to the floor (than the brake pedal) is to keep you from accidentally stomping both pedals in a panic stop? I think I can get 2" of cable travel if the pedal is about 1/2" below the brake pedal.

A bit off topic, but when you get there, I'm interested in what you've got planned for the air supply routing to the throttle body.
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