which size throw out bearing
Thread Starter
Heel & Toe
Joined: Sep 2012
Posts: 23
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which size throw out bearing
I have a 1968 vette with the L79 engine with 4 speed, Can't get the clutch set after installing new clutch, pressure plate and throw out bearing. Found out there are 2 sizes of bearing, the 1 1/4 inch and 1 7/8 inch. they sold me the short one. Which one is right for this particular car? Maybe the long one is the right one.
Drifting
Joined: Apr 2002
Posts: 1,720
Likes: 19
From: Manhattan Beach Ca
Also depends on what pivot ball (GM) is installed in the bellhousing. Either 1.25 TO for short ball or 1.5 TO for long is what I've always heard. Geometrys can vary all over the place so it's not always straight forward. Got that backwards, short TO for long pivot ball.
Last edited by Surfer69; Sep 20, 2012 at 09:31 AM.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
All stock Corvettes from 1955 2nd design to 1982 used p/n 908244 which was replaced by p/n 15680264 in 1992. It is 1 1/4" long.
Willcox
Willcox
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
What clutch and brand are you running? Part number?
Have you checked all your other hardware?
A few things to check:
Ball on frame
Ball on engine
The cross shaft levers…. the levers have been known to slip on the cross shaft...
Correct push rod
Holes in the levers… good and round and not oval,
End of the adjustment clevis worn.
Correct fork
Is the fork on the bellhousing stud.
Is the stud worn…
Lots of things to check, most can be done quickly.. some are a pita.
Have you checked all your other hardware?
A few things to check:
Ball on frame
Ball on engine
The cross shaft levers…. the levers have been known to slip on the cross shaft...
Correct push rod
Holes in the levers… good and round and not oval,
End of the adjustment clevis worn.
Correct fork
Is the fork on the bellhousing stud.
Is the stud worn…
Lots of things to check, most can be done quickly.. some are a pita.
Instructor
Joined: Jul 2010
Posts: 120
Likes: 0
Does someone have the steps to check proper fork ball height and release bearing size? I see a lot of threads where someone asks but not many answers. Most seem like this and suggest they check other things. I don't want to assume what I have is correct before I put it all back together. Chris
