Use The Factory Size That Came With The Heads. It May Be To Your Best Interest To Buy New Ones. You Can Get Them At Your Dealer, Unless You Have Something There Is No Dealer Ship Here
Remove a rocker cover and measure one.
They can be ordered with 3/8" or 7/16".
rocker arm stud is pulling out. how can i get it back in
Worn out rocker nut, stud pulling out, or bad cam.
You have to much lift on the camshaft lobe, They make a long slot rocker arm that looks like a stock rocker arm but it will not cut into the stud. The slot is where the rocker arm fits over the stud. If you are not haveing coil bind problems with the valve springs are broken springs then you can keep the cam that's in it and just use the long slot rocker arms are roller rockers to fix you problem.
you have to remove the pressed in studs ,and tap the hole with the proper thread size for the threaded stud. this may require drilling the heads with the proper size drill, for the tap size you need. you must make sure that the new threaded studs are bigger than the pressed in ones, or you won't be able to thread the stud holes.
Some do some do not. Look at the stud, if it has a nut built into the stud bottom, then it is a screw-in
rocker arms can be tightened right down as their is a shoulder on the stud.
drill a small hole through the stud boss,stud and tap a pin through both boss,stud. This is called stud pinning, you can get a kit from napa for about 20.00 bucks comes with studs,drill bit.
== == The problem was a broken Rocker Arm Stud. Replaced rocker arm stud.
Rocker arm stud nut or bolt 17 to 23 foot lbs
It could be a worn stud or worn nut. If it's really bad, you may need to install a new stud. If a new nut doesn't fit tight, you could try putting a jam nut on top of the rocker nut.