Clutch Size

[glennstar67]

Hey everyone. I know someone here can help me out. My car's transmission is a 1974 Plymouth Roadrunner 4 speed. 400 P code. Is the clutch size 10.5 or 11? I keep seeing both for this application. Thanks in advance!

 

[davek]

I think you might have to get under the car and have a look see. Is the car all original? If you didnt buy the car new then you dont know what other owners have done to it. Im thinking 10.5 JMO

 

[glennstar67]

I contacted the guy I bought it from who's friends with the guys that built it. They told him that the engine is a 69 440 but they left the original trans in it

 

[davek]

10.5 flywheel 130 tooth,11 flywheel 143 tooth, thats all I have for you.

 

[glennstar67]

Ok man. I appreciate it.

 

[cosgig]

Since it is a 69 motor and trans, I’ll throw this out there. There is also a 10.950” clutch, which would’ve come with the aluminum bellhousing.

 

[glennstar67]

Since it is a 69 motor and trans, I’ll throw this out there. There is also a 10.950” clutch, which would’ve come with the aluminum bellhousing.

The trans is still the original from 74. They just changed the engine.

 

[Daves69]

What the 11" scalloped PP (10.95") looked like.....

Bolts up to the 130-tooth flywheel.

 

[cosgig]

View attachment 1705571

What the 11" scalloped PP (10.95") looked like.....
View attachment 1705576

Bolts up to the 130-tooth flywheel.

I went through the whole “10.950” clutch situation with Wayne Brewer. It is the standard clutch for my car, 1970 6bbl Plymouth with 130 flywheel and aluminum bellhousing. It required no alteration to any part, and is different that the 11” setup. I run a Centerforce pressure plate and clutch, that must be correct for the 10.950” setup, it has a lot of happy, abusive miles on it. I was just trying to make light of the fact that there is a 3rd size to look out for in the above posts, to try to help the OP.

 

[ckessel]

I've used several of the 10.95's in the past. One thing though, keep an eye on the PP bolts/washers you use. Some combo's have too large of an od and can interfere with the disc.

 

[glennstar67]

I went through the whole “10.950” clutch situation with Wayne Brewer. It is the standard clutch for my car, 1970 6bbl Plymouth with 130 flywheel and aluminum bellhousing. It required no alteration to any part, and is different that the 11” setup. I run a Centerforce pressure plate and clutch, that must be correct for the 10.950” setup, it has a lot of happy, abusive miles on it. I was just trying to make light of the fact that there is a 3rd size to look out for in the above posts, to try to help the OP.

View attachment 1705626

Thanks for the info. I appreciate it