Thread: sbc 400 2-bolt main

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I believe that's where Jerry says they / or someone plugged the steam holes.

This was not a block we had originally done--it only came here for some touch up--we sent them on there way to get another block

The circles are some aluminum plugs hammered into the steam holes but you can see where they have common tendecies to crack

I think his question got answered, with some other info and opinions tossed into the salad as well! LOL... The rest is just sharing information and experiences I think..