Re: Stock block turbo 347
You need 700+ hp to do it and at that power level the stock block will probably crack on the first pass and will eventually split in half just like others before you. Save yourself from destroying parts an buy a Dart block. It will cost less in the long run. Unless you are going to run alcohol , the compression need to go sown to 9-1 just like 306afr220 said. Then make sure the rest of the car is up to it too. 9's means a cage and often a parachute , NHRA license etc.
Experimental Ford parts collector.