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Username Post: Which clutch to use        (Topic#353734)
42Special 
Poster
Posts: 33
42Special
Age: 59
Loc: NW
Reg: 09-24-16
11-02-18 01:29 PM - Post#2750274    

Question for you guys. I did a mild Hop Up as they used to say when we rebuilt an early 235 babbit pounder for 42. Insert rods bored .020 over 261 cam, dual intake Edmunds manifold w/Carter W1's and Fenton headers. Which clutch would you use the 9" or the 10-3/4" Heavy Duty? I have them both w/correct flywheels. I am tempted to go with the 10 3/4" but wondering if the stock transmission could take the extra mass.



Edited by 42Special on 11-02-18 01:29 PM. Reason for edit: No reason given.

 

Chevs of the 40s

raycow 
Honored Member
Posts: 27858
raycow
Loc: San Francisco, CA
Reg: 11-26-02
11-02-18 02:28 PM - Post#2750283    
    In response to 42Special

The 9" clutch is marginal for a bone-stock 235. It was used in 235 passenger cars only for 1953 and was replaced the following year by a 10" pressure plate with a 9-1/2" disc in passenger cars and a 10" disc in trucks.

The 10-3/4" clutch was optional through 1953 in passenger cars and 1/2 ton trucks and standard in all larger trucks. It does not create any problems for the stock 3 speed trans. If you have one, I strongly recommend that you use it.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
42Special 
Poster
Posts: 33
42Special
Age: 59
Loc: NW
Reg: 09-24-16
11-02-18 03:17 PM - Post#2750289    
    In response to raycow

Thanks Ray! Now the next question. I do have the complete set up, but four of the fingers on the pressure plate, the ends are worn down about 3/16th"s the four are all next to each other. For the life of me I cannot figure out how that would happen. The throwout bearing covers them all. So I don't know if that would be an issue or not



Edited by 42Special on 11-02-18 03:51 PM. Reason for edit: No reason given.

 
raycow 
Honored Member
Posts: 27858
raycow
Loc: San Francisco, CA
Reg: 11-26-02
11-03-18 03:22 AM - Post#2750319    
    In response to 42Special

I don't know what would cause the fingers to wear like that either. Because of the uneven wear, there is a possibility that the pressure plate might not disengage cleanly, but I don't know any way of finding out for certain without bolting it up and trying it. In case you don't want to take that chance, here is a rebuilt pressure plate on ebay:
https://www.ebay.com/itm/1938-40-41-42-46- 1948-50-...

If the above link doesn't work for you, just go to ebay and enter this item no. in the search box: 123462787767

Please let us know what you end up doing, and here's hoping it goes well for you.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
42Special 
Poster
Posts: 33
42Special
Age: 59
Loc: NW
Reg: 09-24-16
11-03-18 03:56 PM - Post#2750364    
    In response to raycow

Thanks Ray I just purchased it! Needless to say I will be going with the 10 3/4" You saved me about $130.00 I was going to call Chevs of the 40's on Monday. Owe you one



 
raycow 
Honored Member
Posts: 27858
raycow
Loc: San Francisco, CA
Reg: 11-26-02
11-03-18 05:45 PM - Post#2750370    
    In response to 42Special

Happy to help. Please keep us posted on developments as the project moves along.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 

Chevs of the 40s

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