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Thread: 55 Auto to Manual Conversion

  1. #1
    Registered Member ykf7b0's Avatar
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    55 Auto to Manual Conversion

    I am trying to source clutch linkage parts for my 55 and I want to remove the th350 and install a 4 speed manual. My car already has the manual pedal assembly and the shaft on the frame for the z bar. Are the z bars the same for all Chevy’s or are they year/body style specific? I have an opportunity to buy a complete set up from a 71 Chevelle. Can I use it?
    Jesus is my pilot! I am the co-pilot.

  2. #2
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    They are model specific, even different between 55 and 57, I would use all 57 stuff if possible.

  3. #3
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    Chevelle parts won't work.

    The clutch linkage parts are different for each year, 55-57. Far as I know only the 57 stuff has the whole set reproduced.

    The part of the 55-56 sets that's not reproduced is the clutch fork and the linkage rod that goes from the z-bar to the clutch fork. However you can use the 57 clutch fork and lower linkage rod with the 55 or 56 z-bar. The 57 fork is a better design anyway. East Coast Chevy in PA sells the parts.
    Last edited by Rick_L; 12-24-2020 at 11:26 AM.

  4. #4
    Registered Member ykf7b0's Avatar
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    Thanks to you both!!! Merry Christmas!!!!

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    Here's another suggestion to buy new 57 clutch linkage and be done with it

  6. #6
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    The problem with using a 57 z-bar in a 55-56 car is the pivot ball is larger on a 57, so a 57 z-bar will have slop on the smaller 55-56 pivot ball unless you make a bushing or change the pivot ball.

  7. #7
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    The bell crank or Z bar on my 55 had to have the inner bar cut off and moved out to clear the oil filter as 55 did not have one.

  8. #8
    Registered Member ykf7b0's Avatar
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    I have just bought a Borg Warner Super T-10 four speed for my 55 but I need a shifter assembly for a bench seat. Recommendations with numbers?
    Jesus is my pilot! I am the co-pilot.

  9. #9
    Registered Member Rocketman's Avatar
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    If you are going to keep the bench seat you will need the C handle made for Tri 5's. You can find some used ones on ebay. Then you will have to have the correct mounting brackets for a T-10.
    Glenn Hargrove

    USAF (66-70) Viet Nam Vet

  10. #10
    Registered Member ykf7b0's Avatar
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    Any idea if this ITM shifter that came on the trans will work. I knew I needed the C handle (thanks!) no matter which shifter assembly was used. I just want to get the correct assembly that works with my bench seat and aligns correctly.
    Last edited by ykf7b0; 12-27-2020 at 04:30 PM.
    Jesus is my pilot! I am the co-pilot.

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