Building a 545 with dove a block, blue thunder main caps on 2,3,4 , screw in freeze plugs. At what point do you hard blok fill ? Are there heating issues running a block with a tall fill ? Motor will be used for bracket racing. 14-1 comp. scj heads
If I understand your question correctly, you should fill it before you bore. If your running gas, just fill to the bottom of the water pump holes, if your running alky you can fill to the top.
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