Part Check
Thread Starter
Le Mans Master
Joined: Feb 2011
Posts: 5,783
Likes: 400
From: Paoli, IN
St. Jude Donor '17, '19
Part Check
Hey Guys,
The winter project got off to a late start...really late. haha. Going to do a transmission\clutch rebuild. Please let me know if I am missing anything or I have the wrong part.
Here is my original thread if you want to give it once over:
https://www.corvetteforum.com/forums...ct-help-2.html
I wanted a parts check. One of the things I am really confused about is which clutch\fly wheel I need. 10.5 vs 11" and the number of teeth. I am going original, but I don't know what is on the car. I called two stores, one Corvette Central and I don't recall the second right now (brain fart) but they told me different things.
From Rock Auto:
- Transmission mount: PIONEER 622378
- clutch kit: AMS AUTOMOTIVE 04504 (assuming 11"\26T)
- flyweel: AMS AUTOMOTIVE 167654 (assuming 11"\26T)
- flywheel bolt: ATP ZX2196
- universal joint strap kit: DORMAN 81000
- universal u bolt kit: GMB 2600121
From the GearBox - super10 overhaul kit:
http://www.thegearbox.org/catalog/it...30/3553424.htm
I think that covers the basic rebuild. Thanks for the help.
The winter project got off to a late start...really late. haha. Going to do a transmission\clutch rebuild. Please let me know if I am missing anything or I have the wrong part.
Here is my original thread if you want to give it once over:
https://www.corvetteforum.com/forums...ct-help-2.html
I wanted a parts check. One of the things I am really confused about is which clutch\fly wheel I need. 10.5 vs 11" and the number of teeth. I am going original, but I don't know what is on the car. I called two stores, one Corvette Central and I don't recall the second right now (brain fart) but they told me different things.
From Rock Auto:
- Transmission mount: PIONEER 622378
- clutch kit: AMS AUTOMOTIVE 04504 (assuming 11"\26T)
- flyweel: AMS AUTOMOTIVE 167654 (assuming 11"\26T)
- flywheel bolt: ATP ZX2196
- universal joint strap kit: DORMAN 81000
- universal u bolt kit: GMB 2600121
From the GearBox - super10 overhaul kit:
http://www.thegearbox.org/catalog/it...30/3553424.htm
I think that covers the basic rebuild. Thanks for the help.
Race Director
Joined: May 2006
Posts: 18,692
Likes: 2,572
Go to PDF page 40 for the information on the stock clutch and transmission for 1980, looks to me you have the 10.5" clutch.
https://www.gmheritagecenter.com/doc...t-Corvette.pdf
https://www.gmheritagecenter.com/doc...t-Corvette.pdf
Last edited by MelWff; Mar 21, 2019 at 02:08 PM.
Le Mans Master
Joined: Mar 2004
Posts: 7,465
Likes: 1,485
From: Little Rock AR
Go to PDF page 40 for the information on the stock clutch and transmission for 1980, looks to me you have the 10.5" clutch.
https://www.gmheritagecenter.com/doc...t-Corvette.pdf
https://www.gmheritagecenter.com/doc...t-Corvette.pdf
If you post the number cast into the aluminum bell housing I would feel better about making a call.
Last edited by stingr69; Mar 21, 2019 at 02:34 PM.
Thread Starter
Le Mans Master
Joined: Feb 2011
Posts: 5,783
Likes: 400
From: Paoli, IN
St. Jude Donor '17, '19
Not 100% sure I trust that info. Shows a 10.5" clutch with a 168 tooth flywheel which would make me pause. Possible??? yes. Likely??? I would have to open it up to believe it.
If you post the number cast into the aluminum bell housing I would feel better about making a call.
If you post the number cast into the aluminum bell housing I would feel better about making a call.
Any what would give you hesitation? Is something not good about the 10.5?
Last edited by ~Stingray; Mar 21, 2019 at 10:06 PM.
Le Mans Master
Joined: Mar 2004
Posts: 7,465
Likes: 1,485
From: Little Rock AR
Nothing bad about either size setup but you can not mix and match the combination. The chart data is suspect.
To verify your setup - The starter nose cone bolts are either "in-line" with each other or they are "diagonal" with each other. Diagonal bolt pattern is used with larger 168 bolt flywheel and 11" clutch setup. The in line bolt pattern is used with the 153 tooth flywheel and the 10.5" clutch setup.
Or you can find the bell housing casting number visible on the outside of the casting. That would also help to confirm the size of your flywheel/clutch assembly.
Thread Starter
Le Mans Master
Joined: Feb 2011
Posts: 5,783
Likes: 400
From: Paoli, IN
St. Jude Donor '17, '19
The mix of a "large" flywheel with the "small" clutch is why I do not trust that Chart Information. 168 tooth flywheels are used with 11" clutches and 153 tooth flywheels are used with 10.5" clutches.
Nothing bad about either size setup but you can not mix and match the combination. The chart data is suspect.
To verify your setup - The starter nose cone bolts are either "in-line" with each other or they are "diagonal" with each other. Diagonal bolt pattern is used with larger 168 bolt flywheel and 11" clutch setup. The in line bolt pattern is used with the 153 tooth flywheel and the 10.5" clutch setup.
Or you can find the bell housing casting number visible on the outside of the casting. That would also help to confirm the size of your flywheel/clutch assembly.
Nothing bad about either size setup but you can not mix and match the combination. The chart data is suspect.
To verify your setup - The starter nose cone bolts are either "in-line" with each other or they are "diagonal" with each other. Diagonal bolt pattern is used with larger 168 bolt flywheel and 11" clutch setup. The in line bolt pattern is used with the 153 tooth flywheel and the 10.5" clutch setup.
Or you can find the bell housing casting number visible on the outside of the casting. That would also help to confirm the size of your flywheel/clutch assembly.
Last edited by ~Stingray; Mar 22, 2019 at 08:13 AM.
Le Mans Master
Joined: Mar 2004
Posts: 7,465
Likes: 1,485
From: Little Rock AR
Would it require extra work or cause any strain if you ended up putting a different one in that wasn't the same as the original? Say it came with a 10.5\153 but I put in a 11\168. Would that cause any issues or fitment problems, need to do something extra, etc. Especially if I am buying the rebuild kit mentioned above.
The next step is check the starter bolt pattern and/or the casting number. Just take a minute to look under there. No disassembly required.
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Le Mans Master
Joined: Mar 2004
Posts: 7,465
Likes: 1,485
From: Little Rock AR
Last comment - Hypothetically...if you wanted to change the setup from what it came with for some reason - the disk, pressure plate, bell housing, flywheel, starter, and starter brace would ALL be REQUIRED to be changed.
Can't say with 100% certainty without looking but I would GUESS you have the larger setup originally. Certainly need to verify before ordering any parts.
Can't say with 100% certainty without looking but I would GUESS you have the larger setup originally. Certainly need to verify before ordering any parts.
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
Would it require extra work or cause any strain if you ended up putting a different one in that wasn't the same as the original? Say it came with a 10.5\153 but I put in a 11\168. Would that cause any issues or fitment problems, need to do something extra, etc. Especially if I am buying the rebuild kit mentioned above.
Le Mans Master
Joined: Mar 2004
Posts: 7,465
Likes: 1,485
From: Little Rock AR
Cant put small flywheel in big bellhousing. It would fit but starter will not reach deep enough to reach the ring gear. Bell housing only accepts one starter nose, not both so the combination does not work. Somone always chirps in about dual bolt pattern starter noses and that does not work either.
Thread Starter
Le Mans Master
Joined: Feb 2011
Posts: 5,783
Likes: 400
From: Paoli, IN
St. Jude Donor '17, '19
The mix of a "large" flywheel with the "small" clutch is why I do not trust that Chart Information. 168 tooth flywheels are used with 11" clutches and 153 tooth flywheels are used with 10.5" clutches.
Nothing bad about either size setup but you can not mix and match the combination. The chart data is suspect.
To verify your setup - The starter nose cone bolts are either "in-line" with each other or they are "diagonal" with each other. Diagonal bolt pattern is used with larger 168 bolt flywheel and 11" clutch setup. The in line bolt pattern is used with the 153 tooth flywheel and the 10.5" clutch setup.
Or you can find the bell housing casting number visible on the outside of the casting. That would also help to confirm the size of your flywheel/clutch assembly.
Nothing bad about either size setup but you can not mix and match the combination. The chart data is suspect.
To verify your setup - The starter nose cone bolts are either "in-line" with each other or they are "diagonal" with each other. Diagonal bolt pattern is used with larger 168 bolt flywheel and 11" clutch setup. The in line bolt pattern is used with the 153 tooth flywheel and the 10.5" clutch setup.
Or you can find the bell housing casting number visible on the outside of the casting. That would also help to confirm the size of your flywheel/clutch assembly.
Le Mans Master
Joined: Mar 2004
Posts: 7,465
Likes: 1,485
From: Little Rock AR
Need to see the 2 starter bolts that attach the starter to the engine block.
Starter Nose Cones Click Here
Casting number shown is the transmission case casting number so that is not going to work.
Just shoot the starter bolts for now.
Starter Nose Cones Click Here
Casting number shown is the transmission case casting number so that is not going to work.
Just shoot the starter bolts for now.
Last edited by stingr69; Mar 24, 2019 at 08:02 PM.
Thread Starter
Le Mans Master
Joined: Feb 2011
Posts: 5,783
Likes: 400
From: Paoli, IN
St. Jude Donor '17, '19
Need to see the 2 starter bolts that attach the starter to the engine block.
Starter Nose Cones Click Here
Starter Nose Cones Click Here
Did the casting number not help?
