72 Chevy K20 SM 465 throwout bearing
 

Do I need a long or short throwout bearing? Researched but seem to get conflicting info. I have compared the diaphragm pressure plate to the HD 3 finger which I'm using. The 3 finger plate is definitely taller than the daiphragm plate. I figure i need the short throwout bearing because of the heavy duty clutch being taller. All replies appreciated.

Re: 72 Chevy K20 SM 465 throwout bearing
 

Assuming you have the 350 engine.

Per the GM parts manual:

Re: 72 Chevy K20 SM 465 throwout bearing
 

Marked "CT24E" per the book:

https://i.ebayimg.com/images/g/GIAAA...N/s-l1600.webp

https://i.ebayimg.com/images/g/tVIAA...E/s-l1600.webp

Other part numbers include 900018, 907403 907826

Re: 72 Chevy K20 SM 465 throwout bearing
 

Well, I'm using the Borg and Beck 3 finger clutch, no diaphragm. problem solved. Found a post on Chevy Talk that says use long one for flat diaphragm and short one for raised finger diaphragm and 3 finger clutch.

Re: 72 Chevy K20 SM 465 throwout bearing
 

The three finger was used originally. The diaphragm pressure plate clutches were common beginning in the late '70's.

According to the parts books, T.O. bearing 908244 was used up to at least 1984 even on the newer style pressure plate.

Re: 72 Chevy K20 SM 465 throwout bearing
 

Can you guys tell me the throwout bearing for a '72 C30 with a 402?

Re: 72 Chevy K20 SM 465 throwout bearing
 

The page with that info for 1971-72 "400" is missing, but for 1969-70 396, they list the 908244 T.O bearing.

Re: 72 Chevy K20 SM 465 throwout bearing
 

Thank you