Filled block on the street?

If you have a partially filled block and it overheats it is a COOLING SYSTEM ISSUE and NOT a block filler issue. I have run blocks on the street that were filled to the bottom of the water pump holes and they never over heat. I always run 8 quarts of oil.

Since about 2003 I stopped doing full fills on 99% of anything because during testing we found that the extra filler didn't really add any strength that WE could prove and decided the weight trade off was not worth it.

We fill EVERYTHING we can. It's 100% BULL DURHAM that even "race" blocks can't benefit from filler.