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Old 09-16-2012, 08:01 PM
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muncie 4 speed sticks in first think it may be linkage

just got a 63 impala that has a supposed recent rebuild on a muncie 4 speed. It hung up in first and after messing with linkage it goes in reverse but freezes and wont go in forward gears. not sure if linkage is lined up properly. it did shift fine through all gears only got about 3 miles on it. I may have linkage messed up a picture of proper alignment may be helpful. thanks

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Old 09-16-2012, 10:01 PM
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What shifter?
Take a pic of the linkage for us!!
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Old 09-17-2012, 07:02 AM
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shifter adjustment

with the trans in neutral , Un hook the rods from the trans shift arms, move them back and forth one at a time to check for the spring loaded ball to click into the internal notch. leave both main case levers in neutral and make sure reverse lever is in neutral , then you use the solid shank end of a 1/4 in drill bit to go thru the holes in the shifter body and the holes in the shifter arms. Adjust the shifter rods to align with the holes in the trans arms. remove the drill bit. If everything is dirty you should dissasemble and clean, and lub it first. . I don't think the 63's used a rubber dirt shield on the shifter mechanism.

Last edited by timothale; 09-17-2012 at 07:11 AM.
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Old 09-17-2012, 07:10 AM
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Rebuilt right. ?

In a rebuild they might have lost one of the balls and the spring could be hanging on the rooster comb. WE used to take out the spring and carefully fit a solid piece of 1/4 in drill rod between the 2 balls. On a hard power shift the inertia of the parts would go past neurtal compress the spring and you would be trying to be in 2 gears at once
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Old 09-17-2012, 08:03 AM
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Timothale gives good advice. You could also have a cracked fork (We just opened a customers box and took one fork out in 4 pieces - pin, both tips and the saddle area woof!!) Your sidecover could be cracked and flexing as well; but I believe Timo has you on the right track.
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