4 speed overdrive????
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From: Cottonwood AZ
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4 speed overdrive????
Does anyone make a gear set that fits in an original Muncie case?
I also have a 1966 Dodge Charger with a 523 stroker engine, Dana 9 3/4" w/3.54 gear and 4 speed.
I replaced the 4 speed gear set with an aftermarket one that a guy in Penn. makes that changes the gear ratios that are close to a Torqueflite auto for 1st, 2nd and 3rd 3rd being 1 to 1 BUT 4th is a 20% reduction. It is a GREAT trans all the power you need in 1 thru 3 and a great highway cruise gear in 4th. Here is a link to his web site, click on the picture that says "Hemi 4 speed overdrive" for the specs and prices.
https://www.passonperformance.com/
The best part of this is it fits in the original 4 speed case so there are no modifications to the car.
DOES ANYONE MAKE SOMETHING LIKE THIS??? If not they should.
I also have a 1966 Dodge Charger with a 523 stroker engine, Dana 9 3/4" w/3.54 gear and 4 speed.
I replaced the 4 speed gear set with an aftermarket one that a guy in Penn. makes that changes the gear ratios that are close to a Torqueflite auto for 1st, 2nd and 3rd 3rd being 1 to 1 BUT 4th is a 20% reduction. It is a GREAT trans all the power you need in 1 thru 3 and a great highway cruise gear in 4th. Here is a link to his web site, click on the picture that says "Hemi 4 speed overdrive" for the specs and prices.
https://www.passonperformance.com/
The best part of this is it fits in the original 4 speed case so there are no modifications to the car.
DOES ANYONE MAKE SOMETHING LIKE THIS??? If not they should.
Thread Starter
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From: Cottonwood AZ
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Chrysler did an OD 4 speed back in the day but they are weak and worthless for a performance car application.
Le Mans Master
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From: Chattanooga Tennessee
In mopar these were new process built a-833 over drives. Common in the 70's. I bought one for my 70
challenger. Lo these many years it's still in the basement.
IIRC for used them as well. Chevy uses an my6
challenger. Lo these many years it's still in the basement.
IIRC for used them as well. Chevy uses an my6
Thread Starter
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From: Cottonwood AZ
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Sounds like you are talking about an old fashion type 3 speed overdrive trans that was used by I think the big 3 and also Rambler in the 50s-60s. They were a standard 3 speed manual trans with a separate OD unit. They were typically used with a 4.56 rear end. If that is what you are referring to that is NOT what I am looking for. I am looking for a GM equivalent of the aftermarket unit made by Passon.
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The ones I have seen are Muncie's with 3rd gear being the overdrive gear. Not a real performance gear spread, and an awkward pattern. It is impossible for 4th gear to be overdrive on a Muncie as 4th is direct through the mainshaft. I think the name of his unit was an M23Y. Agree with checking with one of the 4 speed builders like Dave, Paul, Jody, etc. If it's just for cruising, though, it's an easy, no-mod-to-the-car install.
Thread Starter
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From: Cottonwood AZ
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The ones I have seen are Muncie's with 3rd gear being the overdrive gear. Not a real performance gear spread, and an awkward pattern. It is impossible for 4th gear to be overdrive on a Muncie as 4th is direct through the mainshaft. I think the name of his unit was an M23Y. Agree with checking with one of the 4 speed builders like Dave, Paul, Jody, etc. If it's just for cruising, though, it's an easy, no-mod-to-the-car install.
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From: Inverness FL
St. Jude Donor '07
The ones I have seen are Muncie's with 3rd gear being the overdrive gear. Not a real performance gear spread, and an awkward pattern. It is impossible for 4th gear to be overdrive on a Muncie as 4th is direct through the mainshaft. I think the name of his unit was an M23Y. Agree with checking with one of the 4 speed builders like Dave, Paul, Jody, etc. If it's just for cruising, though, it's an easy, no-mod-to-the-car install.
no, 4th is OD, the OD gear just happens to be in the 3rd gear position inside the transmission, it is operated by flipping the 3/4 lever upside down. same thing with the Chrysler based MY6. it shifts in the normal H-pattern.
according to a search I did today for another similar question on the forum, the autogear gear set no longer seems to be made.
the MY6 is an awesome transmission and I would still be using it if I hadn't bought a SS-700 5-spd... in hindsight, a BIG mistake on my part...
Bill
Last edited by wmf62; Apr 10, 2017 at 08:31 PM.
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St. Jude Donor '07
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Jeff
no, 4th is OD, the OD gear just happens to be in the 3rd gear position inside the transmission, it is operated by flipping the 3/4 lever upside down. same thing with the Chrysler based MY6. it shifts in the normal H-pattern.
according to a search I did today for another similar question on the forum, the autogear gear set no longer seems to be made.
the MY6 is an awesome transmission and I would still be using it if I hadn't bought a SS-700 5-spd... in hindsight, a BIG mistake on my part...
Bill
no, 4th is OD, the OD gear just happens to be in the 3rd gear position inside the transmission, it is operated by flipping the 3/4 lever upside down. same thing with the Chrysler based MY6. it shifts in the normal H-pattern.
according to a search I did today for another similar question on the forum, the autogear gear set no longer seems to be made.
the MY6 is an awesome transmission and I would still be using it if I hadn't bought a SS-700 5-spd... in hindsight, a BIG mistake on my part...
Bill
1. What are the gear ratios in this trans?
2. Is it as strong as the regular Muncie?
3. Are there any differences between the regular Muncie such as
bell housing or clutch?
4. Is the tail shaft the same as the regular Muncie?
5. Are these difficult transmissions to find?
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From: Inverness FL
St. Jude Donor '07
So, a few questions about this MY6 trans.
1. What are the gear ratios in this trans?
2. Is it as strong as the regular Muncie?
3. Are there any differences between the regular Muncie such as
bell housing or clutch?
4. Is the tail shaft the same as the regular Muncie?
5. Are these difficult transmissions to find?
1. What are the gear ratios in this trans?
2. Is it as strong as the regular Muncie?
3. Are there any differences between the regular Muncie such as
bell housing or clutch?
4. Is the tail shaft the same as the regular Muncie?
5. Are these difficult transmissions to find?
Bill
Thread Starter
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From: Cottonwood AZ
C1 of Year Finalist (performance mods) 2019
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From: Inverness FL
St. Jude Donor '07
except for finding one, what wasn't answered? except for needing a large hole bellhousing, it is a direct replacement for a Muncie.
Bill
Last edited by wmf62; Apr 10, 2017 at 09:33 PM.
Thread Starter
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The other web site was talking about using it in an A body and I don't know if that application is the same as a C1.
Thread Starter
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Actually that site said they are often found on the shelf of trans shops probably collecting dust.
I would have asked questions on the other site but the thread is 12 years old.
I would have asked questions on the other site but the thread is 12 years old.
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St. Jude Donor '07
one thing to look out for is that there are 2 versions, the difference being the pattern of the bolt-up to the bellhousing. unless you get the bellhousing with it, you want to get the one that uses a standard Muncie bolt-up pattern, AND you will need a large hole bellhousing. I use a cast iron open bottom truck bellhousing.
Bill
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For your reading pleasure:
https://www.corvetteforum.com/forums...8-my6-o-d.html
Have been using the MY6 since 2006.
Plasticman
https://www.corvetteforum.com/forums...8-my6-o-d.html
Have been using the MY6 since 2006.
Plasticman
Last edited by Plasticman; Apr 10, 2017 at 09:48 PM.