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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


Clutch adjustment help

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G3GM :: G3 :: General Discussion

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Clutch adjustment help Empty Clutch adjustment help

Post by JF74chevelle Sun Mar 05, 2017 7:42 pm

The four speed swap is done be it's really fun to drive but the engagement from the pedal seems to be way to high in the pedal travel. Is there any way to adjust this for it to engage sooner in the pedal travel? Thanks guys-Justin
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Post by Joe73 Sun Mar 05, 2017 8:21 pm

As long as you have the required "free play" at the pedal, thats the best you will do. If I remember correctly free play should be around 1 1/4". Free play is REAL important. If you dont have enough, the throwout bearing with be touching the plate fingers and wearing itself out quickly.

Diaphragm clutches grab up high. Three fingers grab closer to the floor. Diaphragm is the way to go with easy pedal pressure.
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Post by bracketchev1221 Sun Mar 05, 2017 8:42 pm

Like Joe said free play is most important.  I would only modify the free play if you couldn't get enough travel for disengagement at the bottom. You only really want to have to push the pedal enough to shift it. Any excess travel just flexes the fingers more than needed.
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Post by McCauley5983 Sun Mar 12, 2017 6:45 pm

On mine I have two holes on the z bar and depending g on which one you use it will change the geometry to move the pedal feel. Really just a matter of playing with it
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Post by Joe73 Sun Mar 12, 2017 6:47 pm

The 2 holes on the z bar are used for the adjustment. You put the rod in one hole, tighten the adjustment so there is no slack, then put the rod in the other hole. That will give you the proper free play according to the gm manual. Although I'm not a fan of doing it that way.

Thats the reason for the 2 holes.
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