Quote:
Originally Posted by PAUL K
Filled to the bottom of the water pump holes.... seems to work best for us. We've went lower, approximately to the bottom of the middle freeze plug but that didn't help as much keeping the bottom of the bores round.
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Ahh cool. Mine is a '65 2xfreeze plug block, I filled to the bottom of those. I was surprised by how much filler went in because it wasn't far off the bottom of the front pump holes. Measured before/after the fill and my block must be possessed or something because no bores moved at all and the main tunnel didn't budge either. But it's good to know that the stock blocks with a bit of filler can be a good thing. Thanks Paul!