Hey guys, I just replaced one of my heads with an RHS OEM head, same as the stock cast and print but it has screw in studs. I was wondering if its possible to take the stock GM studs out of the stock head, and tap the holes so i can throw a pair of 7/16" screw in studs on both heads, sense i have a pair of rollers that are 7/16"

P.s. i have a machinist that will do this, if noted 'safely possible'
John

 

i had the factory studs pulled from my heads and tapped for screw in studs. been running it daily for about 10 years.

 

Awesome. Thanks for the heads up bro

John

 

If you have screw in studs now, then 7/16 stud change over should be just simple R&R... the 7/16 studs and 3/8 studs use the same size thread on the base, and the top is bigger. Should just be able to buy new studs and put them in....? At least, thats how I always understood it.

 

Let me try to narrow it down, One of my heads cracked.. so i replaced it with an aftermarket OEM head with the same layout and specs as the other stock head. I still have one GM head on the engine, and i want to take the pressed studs out and have them tapped for 7/16" screw in's.

John

 

Yes, that's completely possible. As mentioned, just the top of the studs is larger.

For your aftermarket heads it's simply a remove and replace deal. The other head will require the factory studs be pulled out, hole tapped to 7/16NC, and the boss milled down for the studs to sit on. Then they will be identical. Your machinist can do this easily. I actually did this by hand with an angle grinder - I don't recommend it.

 

Thanks for the info guys, dropped the heads off at the machine shop yesterday, had the valves and what not put in my new head and the other head tapped.. got my studs in and both on my engine, runs great.. ++ i get to brag to my bud about my 7/16" rollers heh'

Thanks!
John