Bubba fix or factory?
Race Director
Joined: Mar 2001
Posts: 14,641
Likes: 4,688
From: Mustang OK
2026 Corvette of the Year Finalist - Modified
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2015 C1 of the Year Finalist
Pete,
Either you are really young (under 50), or, I'm really showing my age (your guess).
This is (or was) a really common way to secure pressed-in rocker arm studs.
It is kind of generally accepted that cams with greater than a .450 lift can cause the stock pressed-in studs to pull out. Especially on engines that are frequently pushed hard.
So, we went to the local speed shop and bought a stud pin kit which consisted of 16 pins and a drill bit.
Drill through the stud boss and into the stud, then knock in the pin. You now had "pinned" studs. The option was screw-in studs. There was also a kit for those also (I still have some of both).
Soooooooooooooooooo, what did you do when the stud went bad (broke off or the threads became bad)? That was never considered as a possibility.
Someone probably pinned those studs 30-40yrs ago.
NOOOOOOOOOOOOOOOOOO, that is NOT a bubba fix. That was a genuinly common mod, sold by ALL the speed shops.
Now, is no one going to admit to remembering or doing this?????????????
Either you are really young (under 50), or, I'm really showing my age (your guess).
This is (or was) a really common way to secure pressed-in rocker arm studs.
It is kind of generally accepted that cams with greater than a .450 lift can cause the stock pressed-in studs to pull out. Especially on engines that are frequently pushed hard.
So, we went to the local speed shop and bought a stud pin kit which consisted of 16 pins and a drill bit.
Drill through the stud boss and into the stud, then knock in the pin. You now had "pinned" studs. The option was screw-in studs. There was also a kit for those also (I still have some of both).
Soooooooooooooooooo, what did you do when the stud went bad (broke off or the threads became bad)? That was never considered as a possibility.
Someone probably pinned those studs 30-40yrs ago.
NOOOOOOOOOOOOOOOOOO, that is NOT a bubba fix. That was a genuinly common mod, sold by ALL the speed shops.
Now, is no one going to admit to remembering or doing this?????????????
Last edited by DZAUTO; Apr 16, 2008 at 08:49 PM.
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
Pete,
Either you are really young (under 50), or, I'm really showing my age (your guess).
This is (or was) a really common way to secure pressed-in rocker arm studs.
It is kind of generally accepted that cams with greater than a .450 lift can cause the stock pressed-in studs to pull out. Especially on engines that are frequently pushed hard.
So, we went to the local speed shop and bought a stud pin kit which consisted of 16 pins and a drill bit.
Drill through the stud boss and into the stud, then knock in the pin. You now had "pinned" studs. The option was screw-in studs. There was also a kit for those also (I still have some of both).
Soooooooooooooooooo, what did you do when the stud went bad (broke off or the threads became bad)? That was never considered as a possibility.
Someone probably pinned those studs 30-40yrs ago.
NOOOOOOOOOOOOOOOOOO, that is NOT a bubba fix. That was a genuinly common mod, sold by ALL the speed shops.
Now, is no one going to admit to remembering or doing this?????????????
Either you are really young (under 50), or, I'm really showing my age (your guess).
This is (or was) a really common way to secure pressed-in rocker arm studs.
It is kind of generally accepted that cams with greater than a .450 lift can cause the stock pressed-in studs to pull out. Especially on engines that are frequently pushed hard.
So, we went to the local speed shop and bought a stud pin kit which consisted of 16 pins and a drill bit.
Drill through the stud boss and into the stud, then knock in the pin. You now had "pinned" studs. The option was screw-in studs. There was also a kit for those also (I still have some of both).
Soooooooooooooooooo, what did you do when the stud went bad (broke off or the threads became bad)? That was never considered as a possibility.
Someone probably pinned those studs 30-40yrs ago.
NOOOOOOOOOOOOOOOOOO, that is NOT a bubba fix. That was a genuinly common mod, sold by ALL the speed shops.
Now, is no one going to admit to remembering or doing this?????????????
Race Director
Joined: Feb 2004
Posts: 11,047
Likes: 2,592
From: Del Boca Vista FL
Pete,
Either you are really young (under 50), or, I'm really showing my age (your guess).
This is (or was) a really common way to secure pressed-in rocker arm studs.
It is kind of generally accepted that cams with greater than a .450 lift can cause the stock pressed-in studs to pull out. Especially on engines that are frequently pushed hard.
So, we went to the local speed shop and bought a stud pin kit which consisted of 16 pins and a drill bit.
Drill through the stud boss and into the stud, then knock in the pin. You now had "pinned" studs. The option was screw-in studs. There was also a kit for those also (I still have some of both).
Soooooooooooooooooo, what did you do when the stud went bad (broke off or the threads became bad)? That was never considered as a possibility.
Someone probably pinned those studs 30-40yrs ago.
NOOOOOOOOOOOOOOOOOO, that is NOT a bubba fix. That was a genuinly common mod, sold by ALL the speed shops.
Now, is no one going to admit to remembering or doing this?????????????
Either you are really young (under 50), or, I'm really showing my age (your guess).
This is (or was) a really common way to secure pressed-in rocker arm studs.
It is kind of generally accepted that cams with greater than a .450 lift can cause the stock pressed-in studs to pull out. Especially on engines that are frequently pushed hard.
So, we went to the local speed shop and bought a stud pin kit which consisted of 16 pins and a drill bit.
Drill through the stud boss and into the stud, then knock in the pin. You now had "pinned" studs. The option was screw-in studs. There was also a kit for those also (I still have some of both).
Soooooooooooooooooo, what did you do when the stud went bad (broke off or the threads became bad)? That was never considered as a possibility.
Someone probably pinned those studs 30-40yrs ago.
NOOOOOOOOOOOOOOOOOO, that is NOT a bubba fix. That was a genuinly common mod, sold by ALL the speed shops.
Now, is no one going to admit to remembering or doing this?????????????
Probably did 50 sets or more back in the old days. Had to remove the pins on a couple when the studs sheared off. Just remove the valve spring and valve and drive the roll pin out. Drive the new stud in, re-drill the stud and install a new pin. Back in business.
Rich
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Team Owner
Joined: Mar 2003
Posts: 26,118
Likes: 1,874
From: Greenville, Indiana
I pinned a set of heads in '65. I still run them. I didn't use solid pins like the picture. I used expansion pins which are hollow. You can pull them back out, unlike those solid ones. I've never had a problem with them but I've never run anything except a Chevy cam.
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Pro
Joined: Jul 2005
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Likes: 3
Tom
Grey hairs older than you at Creitz Automotive in Tulsa in the 50's were using used needle bearings out of U joints to pin the studs. GM during the year 62 went from non pinned to pinned studs on the 409 engines. They had also gone to a wilder cam with different exhaust pushrods during the time period.
Regards
Grey hairs older than you at Creitz Automotive in Tulsa in the 50's were using used needle bearings out of U joints to pin the studs. GM during the year 62 went from non pinned to pinned studs on the 409 engines. They had also gone to a wilder cam with different exhaust pushrods during the time period.
Regards
Race Director
Joined: Nov 2000
Posts: 10,349
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From: Beverly Hills (Pine Ridge) Florida
Le Mans Master
Joined: Nov 2000
Posts: 7,246
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From: Going too fast over the hill. Iowa
I remember the owner of a 63 Chevy F/S at Niagara Dragway telling me he has a stock 327/250 and the dealer was giving him a hard time about the studs coming loose (under warranty). He was beginning to wish he Got the 327/300 for E/S instead, because the 300hp engine came with pinned studs. True or not?
Race Director
Joined: Mar 2001
Posts: 14,641
Likes: 4,688
From: Mustang OK
2026 Corvette of the Year Finalist - Modified
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I remember the owner of a 63 Chevy F/S at Niagara Dragway telling me he has a stock 327/250 and the dealer was giving him a hard time about the studs coming loose (under warranty). He was beginning to wish he Got the 327/300 for E/S instead, because the 300hp engine came with pinned studs. True or not?
There was never a FACTORY SB with pinned studs. Screw in studs? Yes, but not pinned!
Drifting
Joined: Feb 2006
Posts: 1,840
Likes: 29
From: Towaco NJ
yep, I did that in 1966 to many sets of heads. I am pretty sure screw in studs came did not come out until maybe 2 years later. I still have my gasser heads and my buddy wants to buy , but I fear he will go too fast in our group of racers.
Thread Starter
Safety Car
Joined: Aug 2007
Posts: 3,510
Likes: 0
From: Chicago IL
Pete,
Either you are really young (under 50), or, I'm really showing my age (your guess).
This is (or was) a really common way to secure pressed-in rocker arm studs.
It is kind of generally accepted that cams with greater than a .450 lift can cause the stock pressed-in studs to pull out. Especially on engines that are frequently pushed hard.
So, we went to the local speed shop and bought a stud pin kit which consisted of 16 pins and a drill bit.
Drill through the stud boss and into the stud, then knock in the pin. You now had "pinned" studs. The option was screw-in studs. There was also a kit for those also (I still have some of both).
Soooooooooooooooooo, what did you do when the stud went bad (broke off or the threads became bad)? That was never considered as a possibility.
Someone probably pinned those studs 30-40yrs ago.
NOOOOOOOOOOOOOOOOOO, that is NOT a bubba fix. That was a genuinly common mod, sold by ALL the speed shops.
Now, is no one going to admit to remembering or doing this?????????????
Either you are really young (under 50), or, I'm really showing my age (your guess).
This is (or was) a really common way to secure pressed-in rocker arm studs.
It is kind of generally accepted that cams with greater than a .450 lift can cause the stock pressed-in studs to pull out. Especially on engines that are frequently pushed hard.
So, we went to the local speed shop and bought a stud pin kit which consisted of 16 pins and a drill bit.
Drill through the stud boss and into the stud, then knock in the pin. You now had "pinned" studs. The option was screw-in studs. There was also a kit for those also (I still have some of both).
Soooooooooooooooooo, what did you do when the stud went bad (broke off or the threads became bad)? That was never considered as a possibility.
Someone probably pinned those studs 30-40yrs ago.
NOOOOOOOOOOOOOOOOOO, that is NOT a bubba fix. That was a genuinly common mod, sold by ALL the speed shops.
Now, is no one going to admit to remembering or doing this?????????????
Guess it was a pretty common mod back in the day?
Good to hear.
Thanks guys.
Race Director
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From: Camp Verde AZ
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Doug
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Joined: Mar 2001
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From: Mustang OK
2026 Corvette of the Year Finalist - Modified
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2023 C1 of the Year Finalist - Modified
2015 C1 of the Year Finalist
Some people drilled all the way through the boss, and some didn't. If the hole was drilled all the way through, then the pin could be knocked out much more easily if need be.
