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Old 01-29-2003, 03:09 AM
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Post Muncie rebuild

I have a Muncie M20 in my 65 vette that I'm taking out to have rebuilt. The gears I think are fine. Just need new synchros and other overhaul rebiulding kit parts.
Does anyone know a reliable place that is also reasonable that rebuilds Muncies.
Thanks, Mark
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Old 01-29-2003, 07:38 PM
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You mite want to consider re-building that transmission yourself. Ecklers.com offers a video on rebuilding the muncie transmission. The basic rebuild kit consists of bearings, syncronizers, and gaskets for about $175.00. You will need a press and snap ring pliers. You can get a 12 ton press for about $100.00 from Harbor Freight, which is good for a lot of stuff. ( U joints, transmissions, bending metal etc.)

If you don't want to do it yourself any transmission repair place can do it. I would go to bbb.com to check out the business first, and expect to pay between $300 and $600 depending on what the transmission needs.
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Old 01-30-2003, 05:51 AM
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Thanks for your help. I did buy the video a few weeks ago and quite frankly it doesn't look that hard but I think with my limited auto knowledge I'd be better off paying a few hundred and having it done by someone that knows what he's doing. But the bbb.com idea is a good one. I did find a local shop that would do it for $200-250 plus parts. I'll check them out on BBB. Thanks again for your help, Mark
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Old 03-03-2003, 04:56 PM
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I am going thru an M20 rebuild as we speak. I just ordered my parts from 5speeds.com. They were a little cheaper than most on the rebuild kit. If your trans is like most, you'll probably need a reverse gear an idler(people can be so rude to reverse). I have 2 M20's apart in my workshop and they both have the same problems. It will more than likely cost you big bucks to have a shop do your work. If your interested, buy the rebuild kit, send me the trans, and i'll do a pro job fir $200.

[ March 03, 2003: Message edited by: 68vettehead ]</p>
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Old 03-04-2003, 06:47 PM
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I rebuilt my M-20 just using the schematics in the Chevy overhaul manual. Just watch out for the loose needle bearings. As I remember there were something like 126 of them. Just take your time. You'll also probably need an extra set of hands for reassembly.
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Old 03-05-2003, 05:10 AM
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Thanks guys. I already decided two weeks ago to send it to a local tranny shop that someone local recommended. Now I'm crossing my fingers.
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Old 01-22-2004, 04:40 PM
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There is a 4 speed m 20 in my truck. You have to hold it into 3rd when you give it gas(it wants to push it out). I was wondering if anyone has had this problem and,or knows what needs to be fixed and how hard it would be. Think it would be less of a headache if I got one from a wrecker??
I belive it is from shifting from 4th into 3rd at to high of a rpm, I dont know for sure it was like that when i got it.

Thanks, Ortie
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Old 01-22-2004, 06:19 PM
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you might want to try Street-Wise performance, Box 105 Creek Rd.Tranquility N.J. 07879 973-786-7500
E-mail streetwise@usa.com
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Old 01-22-2004, 06:41 PM
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Muncie 4 speeds are a breeze to rebuild. I cut my teeth on them in high school.....that was a long time ago.

Vince
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Old 02-19-2004, 07:36 PM
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Muncie M20 troubleshooting guide?

Hi,
I'm new to this site. I need to find a troubleshooting guide that will tell me why my Trans. is popping out of 1st + 4th gears as well as grinding into 3rd + 4th.

Quote:
Originally posted by MI2600
I rebuilt my M-20 just using the schematics in the Chevy overhaul manual. Just watch out for the loose needle bearings. As I remember there were something like 126 of them. Just take your time. You'll also probably need an extra set of hands for reassembly.
Hi,
I would like to know where I can find a troubleshooting guide for my Muncie M-20. It is popping out of 1st+4th gears and grinding into 3rd + 4th.
Is your car a Biscayne? I have a '66 with a 454 4spd posi+3.73's.


Robert

Last edited by 454 Biscayne man; 02-19-2004 at 07:36 PM.
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