knocking in my head
 

Ok I had my #16 heads rebuilt, and I have a knock in either the #2 or #4. I have changed the rockers, lifters, cam and rods twice and the problem is still there. So I was looking at the studs and the #4 intake stud is higher that all the rest, could this be my problem? Is so, how can I push the stud down further without causing damage. If this is not the problem what do you think it is?

Jim

Does the problem come and go/different with engine temp/rpm?

You say knocking, but usually connecting rods knock and the valvetrain taps (the way I describe it anyway).

Yes tapping would be a better word. It goes along with the rpm if the rpm is higher the tapping is faster.

I thought it could be spark knock but when I pull the plug wires the tapping is still there.

Could also be exhaust leak (especially if you have headers)....

Yes, if one stud is higher it is pulling out. You could try tapping it down but there is no guarantee that it will not pull out again. The old school repair is to drill through the stud boss and stud then tap in a roll pin. Or remove the heads and take them to a machine shop and have threaded studs installed.

I pulled it apart and tried the two different torque techniques the tight then 180 and the 20foot pounds. But to no avail it still there, it’s driving my buddy crazy. I have placed the stethoscope everywhere I can’t find it. I will look for an exhaust leek

I know now I was informed wrong, but I have always thought the 16 heads had screw in studs.

Thats what I thought too but evidently there were some later 16 heads which did not.

I think the '68 and '69 16 heads are big valve, screw in studs, but the 16's made in '70 were small valve, press in studs.

These are a set of 70 heads I have on a 68 HO is there any way it could be in the springs?