400 blocks
There have been three that split cylinders around my group of racer friends here. They were all three bracket racers with carbs and no nitrous. One was a fresh motor that was a Lunati crank and pro mod rods motor and he felt the same way as you guys did about the GM blocks because he had good service till then. That block collapsed about the 15th run and took out everything but the heads. It was .040 over with 12:1 compression. I dont know why people are so quick to take it as such a insult that someone makes a possible helpful statement but he is right, hes not making a comment about someones wife or children here! I would run the GM block in a street motor, but based on facts, I will not run them on a race engine anymore. To costly in event of a failure.