Machining SB heads for rocker studs

[Scott G.]

I have purchased a GM screw in rocker stud kit and am ready to machine my SB heads to accept the studs. It looks like the stud bosses need to be machined down by about the thickness of the hex on the screw in studs. Is this correct?

[Joe L.]

Re: Machining SB heads for rocker studs

Scott-----

I think it's more than that. If I were you, I'd have a machine shop perform this operation.

[Verle R.]

Re: Machining SB heads for rocker studs

Scott,

I agree with Joe, any competent automotive machine shop will know just how to do this and will be set up to do it correctly.

Verle

[Scott G.]

Re: Machining SB heads for rocker studs

I like doing these types of things myself. I have access to a bridgeport and I know how to use it. I just want to make sure I do it right.

[Clem Z.]

Re: Machining SB heads for rocker studs

measure the screw in stud length from under the hex to the top of the stud,add the thickness of the guide plate, set the end mill at the top of one of the orignal studs in the head,lower the mill head or raise the table the distace you measured from the screw in stud plus the guide plate thickness and you are there. you want the top of the screw in stud to be at the same dimentional location as the orignal pressed in stud. of course you will need to remove the press in studs after you take the measurement before cutting

[Scott G.]

Re: Machining SB heads for rocker studs

Thanks, Clem

I am not using guide plates. I will be using the self guided rockers.

Scott

[Clem Z.]

Re: Machining SB heads for rocker studs

make sure to enlarge the push rod guide hole for clearance for use of SGR

[Scott G.]

Re: Machining SB heads for rocker studs

I am planning on using an end mill to open up the guide holes.

[Clem Z.]

Re: Machining SB heads for rocker studs

watch you do not break thru the intake port walls

[Scott G.]

Re: Machining SB heads for rocker studs

OK, thanks