Not Ranked
Rick;
I bought a Dart 351 block when it first came out. After having the machine work done and, while washing down the block, I found chunks of what appeared to be black sand in the water jackets. Some of these chunks were too big to drop out and I spent hours with a hammer, screwdriver and a flashlight breaking them up so they'ed come out. There are still a couple of big pieces with wire in them that wouldn't break up so I'll be running a coolant filter for a while. According to Dart this is normal, but I have my doubts. In retrospect I should have had the machining done, ground off the casting marks and flashing on the inside and then I should have taken it and had it acid dipped to remove all the casting sand. If you go that way you'll have to redo the cam bearings but you'll sleep better.
Bill Stradtner
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