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Old 01-22-2011, 01:34 PM
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Muncie Shifting Problem

Hello Everyone, I'm working on a '65 Impala with a 4 speed Muncie. The tranny has been completely rebuilt and I have never run it. I installed a Hurst Comp Plus shifter the other day. However, when I went to set the rods at "neutral" I noticed that the 3-4 arm was stuck and would not move freely. After talking with a couple guys online I rotated the output shaft and the 3-4 arm became "unstuck" and I was able to put in the straight up neutral position. Now, the 1-2 arm is stuck and the output shaft will not turn at all. Any Muncie guru's out there that can help?

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Old 01-22-2011, 02:45 PM
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shifting prolems

chock the car, get under and disconnect the forward shift rods at the shifter. there should be a hole which lines all the shift levers for neutral pos. line them up ( I use a drill bit) you may have to move the rev. lever if you left it in rev. to Aline them all 2. by hand sift the other 2 levers (1&2 and 3&4) to the center pos. now adjust the rods to Aline with the levers and reinstall them. If your shifter isn't bad (worn out) it should work. lol
P.S. If the car is on the ground you'll have to someone push the clutch before it'll shift. If its off the ground ( wheels free to turn) it won't matter.
If its in 2 gears and you force it to turn, you may rip a gear.

Last edited by lanier ledford; 01-22-2011 at 02:59 PM.
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Old 01-22-2011, 03:46 PM
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I may not have been entirely clear in my post but all rods are disconnected with the alignment tool (drill bit) in place. However, the 1-2 arm connected to the tranny is stuck and will not move. Also, the output shaft will not turn. Now, what do I do?
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Old 01-22-2011, 03:51 PM
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Also to note; the car is off the ground without the drive shaft in and all parts are brand new!
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Old 01-22-2011, 03:55 PM
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I think you need to remove the side cover and see what is wrong. One of the sliders may have been installed backwards which will cause the shift lever to be in the wrong position when it's in neutral.
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Old 01-22-2011, 04:18 PM
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unbolt the shift arms off the tranny, use an apprpriate tool to see if you can rotate the shift shafts individually, trans cannot be in 2 forward gears at one time, unless something is broken or missing, however ,the trans CAN be in 1 forward gear & reverse at the same time, make sure that is not the case. After determining that you have succesfully positioned all 3 shift shaft s in neutral, i.e. output shaft rotates, proceed to adjust your linkage.

dave
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Old 01-22-2011, 04:41 PM
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The transmission can be in 2 forward gears at the same time if one of the sliders is in backwards.
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Old 01-22-2011, 05:07 PM
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I haven't been inside a Muncie for a long time, but are the shift forks offset, if so, one of them needs to be flipped around?
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Old 01-22-2011, 06:21 PM
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The shift forks can go in any direction. They are centered.

Nice Nova. I wish I had that blower on top of my 427!

Last edited by big gear head; 01-22-2011 at 06:30 PM.
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Old 01-30-2011, 06:31 PM
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Thanks guys for all your responses. I finally figured out that I had a wrong set of shifter rods. And on top of that the shifter "stops" were out of adjustment. So all is good and now I know what the hype is on the Hurst shifters... they shift amazing!
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Old 01-30-2011, 07:48 PM
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Well at least it wasn't an internal problem.
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Old 01-31-2011, 09:57 AM
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Glad you fixed it.
For posterity though:

Someone could have had 2 oil slingers and shimmed the mainshaft into the input

Your cover could have been out of square
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