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Old 06-25-2023, 10:23 AM   #144
hewittca
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Join Date: Jun 2014
Location: Mocksville, NC
Posts: 1,741
Re: Sullii the 72 GMC 1500

Another little side project I started a while ago and was able to finish up was modifying the brake and clutch pedal shafts. I always thought it was awkward how high these pedals were. I thought it would be nice to change these, and decided to go ahead with that thought once I saw how clay68c10 did his here. Basically, the pedal faces are moved forward so the pedals shafts come straight down instead of down and towards you. This makes the transition from throttle to brake much more natural and modern.





These pedals were welded up by my friend at work where we have a welding table. We both learned that the brake spring makes a nice heater coil while welding! After only a few tacs it was cherry red. After that, we connected the ground clamp directly to the pedal shaft... another lesson learned.



With the LS swap, you need a dual function switch on the brake pedal. One normally open circuit for the brake lights, and one normally closed circuit for the PCM which needs to see 12V on the TCC brake switch when you are not on the brakes. I used ACDelco PN D850A which was a direct fit to the pedal bracket. I also had to add a clutch switch for the CPP input to the PCM which, like the brakes, needs to see 12V when you are off the clutch. I had a Essen MTCRS-26DH rocker switch lying around, so I used that. I had to weld a tab to the clutch to activate the switch. I added a pink wire in parallel between the brake and clutch switch that will go to a keyed power on terminal in my fuse panel. This will provide the 12V needed when the key is on.

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Builds: Green Gus the 68 C10 ; Sullii the 72 1500
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