LT4 10mm LT4 rocker studs

[Kevo]

I have a set of production non adjustable LT4 rockers and nuts, I can't find studs. Has anyone ever tried to use Pontiac bottle neck studs in place of the pedestal studs used on LT4. They are 7/16 at the bottom and used 3/8 nut at top

 

[Hib Halverson]

check the Crane Cams catalog. They have a 10-mm stud PN 99148-16.

 

[Kevo]

Unfortunately those are the opposite of what I need. 10mm threads in to head and 3/8 stud for commonly available rocker arms. Thanks though.

 

[Hib Halverson]

Are you trying to replace a set of stock studs?

 

[Kevo]

I got the rocker arms and nuts several years ago. I thought they were normal roller rockers not realizing they were the production non adjustable set up. Chevrolet chose to build 2 LT4s the "over the counter" version used different studs, rockers, and locking nuts. I'm just trying to use what I got. Pontiac used a bottle neck rocker stud, similar to what was used in the assembly line LT4. The same torque to 20 FT-Lbs and they are good to go. When you changed cams in the Pontiac V8 sometimes it required installing Chevrolet screw in rocker studs so valve lash could be adjusted.

 

[Kevo]

it seems i have the original 10mm nuts and 3/8 rocker arms. Just a "Senior Moment" just need correct lock nuts.