High Performance Pontiac
Click here to find out more!

Rocker Studs

  
High Performance Pontiac
1 |  2 |  Next   | Last 
Item Posts    Sort Order

Rocker Studs

 
big-g-67gto big-g-67gto
Guru | Posts: 905 | Joined: 07/10
Posted: 01/01/11
01:50 PM

I'm converting the rocker studs on a set of #16 1970 heads, from press in to screw in. The press in studs apear to be hollow, can anyone tell me why??? please...  Blush  
I got that Tin Indian GRIN!!

gtojack1366 gtojack1366
Guru | Posts: 1226 | Joined: 11/09
Posted: 01/01/11
02:14 PM

They are called through the rocker stud oiling studs ! And are for oiling ! They are usually on older pontiac engines with no oil hole through the pushrod .Why they are on a 1970 head ? #16 1970 heads are small valve heads you might want to get a set of big valve heads . Wink  

big-g-67gto big-g-67gto
Guru | Posts: 905 | Joined: 07/10
Posted: 01/01/11
03:01 PM

These heads are going on a 350 that I am freshing up, will the screw in studs need oil holes?? I've worked with big value heads and don't remember those haveing oil holes.  
I got that Tin Indian GRIN!!

gtojack1366 gtojack1366
Guru | Posts: 1226 | Joined: 11/09
Posted: 01/01/11
03:12 PM

You shouldn't need oil studs if you have hollow pushrods and rockers to match . But I think you will have to use a 1/2 - 7/16 screw in studs because the hole is to big for a 7/16 base stud . I would send them to a machine shop !  

big-g-67gto big-g-67gto
Guru | Posts: 905 | Joined: 07/10
Posted: 01/01/11
03:53 PM

Will do Jack thanks for your imput Grin  
I got that Tin Indian GRIN!!

tuffnuff tuffnuff
Moderator | Posts: 2535 | Joined: 12/09
Posted: 01/01/11
04:00 PM

Icon Quotegtojack1366:
You shouldn't need oil studs if you have hollow pushrods and rockers to match . But I think you will have to use a 1/2 - 7/16 screw in studs because the hole is to big for a 7/16 base stud . I would send them to a machine shop !



+1
Threading rocker stud bosses is a job for a machine shop, that tilts and aligns each hole for surfacing and tapping.

Grin  
When The Flag Drops.,.

tuffnuff

The Bull ***t Stops.,.
tuffnuff

P. Engineer, Engine Builder

Pontiacman8 Pontiacman8
Moderator | Posts: 5771 | Joined: 02/08
Posted: 01/02/11
09:09 AM

+1  
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races

Pontiacman8
Pontiacman8
Pontiacman8

gtojack1366 gtojack1366
Guru | Posts: 1226 | Joined: 11/09
Posted: 01/02/11
04:43 PM

Here's something I found out about the hollow studs - We pull the studs and install ARP 1/2" studs. With stock rocker arm ratios, the cast-in pushrod guide in the head works fine. Keep in mind the 1965 and later heads had the hollow rocker studs, but no oil passages . Why ?  

big-g-67gto big-g-67gto
Guru | Posts: 905 | Joined: 07/10
Posted: 01/03/11
12:49 PM

The machinist found screw in studs, with the oilers, thru Northern Auto Parts. Grin  
I got that Tin Indian GRIN!!

big-g-67gto big-g-67gto
Guru | Posts: 905 | Joined: 07/10
Posted: 01/07/11
08:05 AM

Got the heads back from the machine shop yesterday, they look great, new valve springs, new APR screw in studs with oilers. Plan to start putting the old 350 back together Sunday. Cool ....  
I got that Tin Indian GRIN!!

Pontiacman8 Pontiacman8
Moderator | Posts: 5771 | Joined: 02/08
Posted: 01/07/11
08:22 AM

yep  
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races

Pontiacman8
Pontiacman8
Pontiacman8

big-g-67gto big-g-67gto
Guru | Posts: 905 | Joined: 07/10
Posted: 01/13/11
01:38 PM

Put the heads on the 350 over the weekend, but couldn't get the rockers set, ran out of threads on the stud before lash was set.
Push rods are 9.146 long, I'm thinking we have the wrong studs, they stick up 1/4" above the rockers... Frown  
I got that Tin Indian GRIN!!

gtojack1366 gtojack1366
Guru | Posts: 1226 | Joined: 11/09
Posted: 01/13/11
02:54 PM

I had that problem before the studs are to long you need deeper polylocks if your using polylocks ?  

big-g-67gto big-g-67gto
Guru | Posts: 905 | Joined: 07/10
Posted: 01/13/11
03:05 PM

I was using a steel locking nut. Is there such a thing as a spacer that goes between the fulcrum and the nut??  
I got that Tin Indian GRIN!!

gtojack1366 gtojack1366
Guru | Posts: 1226 | Joined: 11/09
Posted: 01/13/11
03:16 PM

You have to use polylocks with the studs your using .They will go down farther than stock nuts . What kind of rockers are you using ?  

1 |  2 |  Next   | Last