Rocker arm threads

[95sporty150]

anyone know what size threads they are? I bought a used head and it was stripped, now I need to helicoil it so I can get this car moving. anyone?

[bszopi]

Although it shouldn't matter... what heads are they? Its most likely an M10x1.25, although I could be wrong on the pitch.

[95sporty150]

umm, lol I had it wrote down somewere, they are off a 99 pontiac engine, ill get the casting number, stand by. are all the rocker arms the same? I layed them out the order they came off by my wife, moved some things to get to some cleaner I have and they get scrambled up, is there any diffrence?

[bszopi]

No, there is no difference.

[geoffinbc]

They are M10X1.25 on the bottom M10X1.00 on the top.

[95sporty150]

so will these work?

http://cgi.ebay.com/NEW-Permacoil-He...QQcmdZViewItem

[geoffinbc]

Yea. Are you saying you have damaged your threads?

You have another option aswell. You can tap it out to a 7/16" thread and then use a SBC stud with a 7/16 bottom 3/8" top. This will allow the use of an aftermarket rocker arm if you wish to go this route. But for a fix on a stock motor the Heli Coils are the way to go.