I just got my motor apart and found it dropped #7 exhaust valve. I'm looking for a square port, open chamber. My casting is a 188, but a 990 will work. Anybody have any Chevy square port castings? I'm not sur what casting a old 420 head would be but think that will also work.

Try Clearwater Cylinder Head Inc
(727) 572-1958 . I bought some heads from them. They know which heads are which. Good guys to deal with. Just be sure they don't sell you one with a helicoil in it.

ohh i thought you meant something else. anyway if you need her # let me know.

Do you need one head or two? I have a slightly modified one that you can have. Make me a offer. I have the valves and springs and everything for it I am fairly sure.

Jon

I have two off of a 1989 motor, with valvetrain and valve covers.
John 716 688 7604 or email [email protected]

Thanks for the replies. Cuda, Clearwater Cylinder Head didn't have one but sad they thought they could repair mine. I'll know Friday. If they can't I'll be giving you other guys a call. Again Thanks