1979 L48 Clutch Fork Ball Stud
Thread Starter
Racer
Joined: Jan 2014
Posts: 339
Likes: 9
From: Goodyear AZ
1979 L48 Clutch Fork Ball Stud
I have a 1979 L48 with manual trans. My Clutch Fork Ball Stud is 1 3/8 inch tall. All I can find is 1 1/2 tall ball studs. Does anyone know if they are interchangeable. Any help would be appreciated.
I did find this info
55-65 #3729000 1 1/2
66-75 #3887159 1st design 1 3/8
75-81 #3729000 2nd design 1 1/2
I did find this info
55-65 #3729000 1 1/2
66-75 #3887159 1st design 1 3/8
75-81 #3729000 2nd design 1 1/2
Last edited by r16678; Dec 27, 2017 at 05:11 PM.
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,754
From: Charlotte NC
I know this thread somewhat applies to your question.
I replied to it in POST#18...and read it so you can check out what you have going on.
https://www.corvetteforum.com/forums...djustment.html
DUB
I replied to it in POST#18...and read it so you can check out what you have going on.
https://www.corvetteforum.com/forums...djustment.html
DUB
Thread Starter
Racer
Joined: Jan 2014
Posts: 339
Likes: 9
From: Goodyear AZ
I know this thread somewhat applies to your question.
I replied to it in POST#18...and read it so you can check out what you have going on.
https://www.corvetteforum.com/forums...djustment.html
DUB
I replied to it in POST#18...and read it so you can check out what you have going on.
https://www.corvetteforum.com/forums...djustment.html
DUB
Safety Car
Joined: Feb 2006
Posts: 4,142
Likes: 704
Some info I found on the interweb.
The 3729000 ball stud ( at 1.5" overall length ) was used on all Corvettes from '55 to '81.
Except at the beginning of the '66 production they switched to the 3887159 ball stud, ( at 1.375" overall length ). It turned out this shorter ball stud could cause the clutch fork to hit the bellhousing. Later in '66 they changed back to the longer stud.
So, somehow, it appears that the shorter stud ended up in your bellhousing.
The 3729000 ball stud ( at 1.5" overall length ) was used on all Corvettes from '55 to '81.
Except at the beginning of the '66 production they switched to the 3887159 ball stud, ( at 1.375" overall length ). It turned out this shorter ball stud could cause the clutch fork to hit the bellhousing. Later in '66 they changed back to the longer stud.
So, somehow, it appears that the shorter stud ended up in your bellhousing.
Thread Starter
Racer
Joined: Jan 2014
Posts: 339
Likes: 9
From: Goodyear AZ
Some info I found on the interweb.
The 3729000 ball stud ( at 1.5" overall length ) was used on all Corvettes from '55 to '81.
Except at the beginning of the '66 production they switched to the 3887159 ball stud, ( at 1.375" overall length ). It turned out this shorter ball stud could cause the clutch fork to hit the bellhousing. Later in '66 they changed back to the longer stud.
So, somehow, it appears that the shorter stud ended up in your bellhousing.
The 3729000 ball stud ( at 1.5" overall length ) was used on all Corvettes from '55 to '81.
Except at the beginning of the '66 production they switched to the 3887159 ball stud, ( at 1.375" overall length ). It turned out this shorter ball stud could cause the clutch fork to hit the bellhousing. Later in '66 they changed back to the longer stud.
So, somehow, it appears that the shorter stud ended up in your bellhousing.
Thread Starter
Racer
Joined: Jan 2014
Posts: 339
Likes: 9
From: Goodyear AZ
Some info I found on the interweb.
The 3729000 ball stud ( at 1.5" overall length ) was used on all Corvettes from '55 to '81.
Except at the beginning of the '66 production they switched to the 3887159 ball stud, ( at 1.375" overall length ). It turned out this shorter ball stud could cause the clutch fork to hit the bellhousing. Later in '66 they changed back to the longer stud.
So, somehow, it appears that the shorter stud ended up in your bellhousing.
The 3729000 ball stud ( at 1.5" overall length ) was used on all Corvettes from '55 to '81.
Except at the beginning of the '66 production they switched to the 3887159 ball stud, ( at 1.375" overall length ). It turned out this shorter ball stud could cause the clutch fork to hit the bellhousing. Later in '66 they changed back to the longer stud.
So, somehow, it appears that the shorter stud ended up in your bellhousing.
Thread Starter
Racer
Joined: Jan 2014
Posts: 339
Likes: 9
From: Goodyear AZ
I found a link to the same part that was originally installed in my L48 1979 part 3887159
http://www.4speedconversions.com/3887159.html
However I am going with everyone's recommendation to use part 3729000 which is 1 1/2 inch tall.
http://www.4speedconversions.com/3887159.html
However I am going with everyone's recommendation to use part 3729000 which is 1 1/2 inch tall.
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,754
From: Charlotte NC
I found a link to the same part that was originally installed in my L48 1979 part 3887159
http://www.4speedconversions.com/3887159.html
However I am going with everyone's recommendation to use part 3729000 which is 1 1/2 inch tall.
http://www.4speedconversions.com/3887159.html
However I am going with everyone's recommendation to use part 3729000 which is 1 1/2 inch tall.
When you check to see if your clutch fork is centered when it hits the pressure plate ( like I previously mentioned)...that you might need to go back to what was in it.
DUB
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Thread Starter
Racer
Joined: Jan 2014
Posts: 339
Likes: 9
From: Goodyear AZ
I STILL would do a test before you complete the job. This is so when you finish connecting your clutch linkage you do not find that all of a sudden you no longer can attach the push-rod coming through the firewall due to linkage angles ahve changed.
When you check to see if your clutch fork is centered when it hits the pressure plate ( like I previously mentioned)...that you might need to go back to what was in it.
DUB
When you check to see if your clutch fork is centered when it hits the pressure plate ( like I previously mentioned)...that you might need to go back to what was in it.
DUB
