Any small block Ford gurus here?

[zteknik]

Geez it's been ages since I toyed around with any performance stuff
But have you checked the exhaust valve springs? I did an engine once with a similar issue and found the springs to be to weak- wound up doing a double spring set up- but then again it was in a Mopar440
Now I just fix stock Ford stuff. I don't remember all the little tricks anymore.

[Dave_L]

Geez it's been ages since I toyed around with any performance stuff
But have you checked the exhaust valve springs? I did an engine once with a similar issue and found the springs to be to weak- wound up doing a double spring set up- but then again it was in a Mopar440
Now I just fix stock Ford stuff. I don't remember all the little tricks anymore.

I had the matching springs for the cam installed on the heads.