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After removing a broken speedometer cable tip from my 74 Corvettes' four speed Muncie transmission the nylon gear for the cable fell into the case.
My question is can I remove the shifter cover to retrieve it without removing the transmission from the car?
I'm finding it can be done on mid 70's Chevelle's.
Any suggestions?
After removing a broken speedometer cable tip from my 74 Corvettes' four speed Muncie transmission the nylon gear for the cable fell into the case.
My question is can I remove the shifter cover to retrieve it without removing the transmission from the car?
I'm finding it can be done on mid 70's Chevelle's.
Any suggestions?
There is NO WAY that you can retrieve the speedometer gear going through the main case.
Try to find a mechanics part pick-up CLAW and with a LOT of luck - you might be able to fish it out through the speedometer gear hole ?
You will also need a small pen light , a mirror for sure , a pair of 90 degree needle nose pliers MIGHT help also - this is a pretty tricky proposition
I have never had it happen to me but some people have just left it when they couldn't extract the gear - it's plastic so shouldn't chew up anything other than itself.
Good luck & have fun
It'l ONLY be FUN if you pull it off
Last edited by QIK59; Feb 17, 2025 at 02:31 PM.
Reason: "LOT of luck"
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Ersonally i would leave it, but with the bullet out, and a desperate need to have it i would try mechanics fingers as mentioned. When that doesnt work, disconnect the shifter and transmission mount, jack up the rear of the engine just enough to take the weight off the tranny. Then remove the 4 bolts holding it on the bell hosing. You can then rotate it enough so that it gets closer to the hole giving you a better chance of grabbing it with the mech fingers or a hook. You might get some gear oil to spill out if you rotate it too much.....again is this worth it
Just as a reference photo, I am certain all you need to get into is the extension housing. You should buy the book ( Muncie 4-Speed Transmissions: How to Repair and Modify ) beforehand and not get into the “wrong” place.
Just as a reference photo, I am certain all you need to get into is the extension housing. You should buy the book ( Muncie 4-Speed Transmissions: How to Repair and Modify ) beforehand and not get into the “wrong” place.
Steve O.
What does that photo have to do with what he is "working" on - all I see is a bolt on overdrive unit for a Muncie ?
Do YOU have any idea's HOW to get into the extension housing ??
Rescue has a good idea - would be tricky and laborious to "pull off" though - might be a good try if you were desperately wanting to get that little ugger out LOL
You would need to drain the tranny or could turn into a real mess
Tried all your recommendations immediately after the incident and figured then I'd maybe be okay leaving it in and hope for no problems .
Thanks for responding1
I’m just trying to say…Get the book…see what’s entailed.
Q1K59… that’s the quickest extension housing picture I could find. And if the OP feels confused by this then he needs to research solid info.
Everybody’s “spitballing” a repair.
I’m just trying to say…Get the book…see what’s entailed.
Q1K59… that’s the quickest extension housing picture I could find. And if the OP feels confused by this then he needs to research solid info.
Everybody’s “spitballing” a repair.
Steve O.
The book doesn't say dung about retrieving a speedo gear.
BOOK is useful if you're going to work on a Muncie NOT fish out a speedo gear
SOME people know what they are talking about
It will be in the tail housing not the main case. I'm going to warn you that it is not going to be easy to do this under the car. The reverse gear and slider for it are a PITA when its on a bench let alone to try and do it under the car.
1-You may get lucky fishing for it. the midplate blocks access to the tail housing from the side cover and forget about that in the car.
2- You remove the trans, then remove the tail housing. The right way.
The only gear that actually moves in the trans is the reverse gear and it's the largest. If the plastic gear is out of the way it may never be an issue. If it moves forward and gets in the path of the reverse gear who knows.
1-You may get lucky fishing for it. the midplate blocks access to the tail housing from the side cover and forget about that in the car.
2- You remove the trans, then remove the tail housing. The right way.
The only gear that actually moves in the trans is the reverse gear and it's the largest. If the plastic gear is out of the way it may never be an issue. If it moves forward and gets in the path of the reverse gear who knows.
#3 - After removing tranny from car he might be able to "tip and roll" the tranny around enough to get the gear visible in the hole - might take some work but would save taking off the t'hsg
Seems it would either drop to the bottom of the tailpiece housing and remain there or get ground up by the reverse gear which may or may not be a problem so for now I'm leaving it as is and will see what happens,
Thanks to all for the advice!
You are welcome Doug,
Hopefully you have a drain plug on the tranny and you can change the oil a couple times to get rid of the ground up plastic
Jerry
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