Better heads

A 344/349 engine really needs this size head on it, just due to the amount of stroke that the engine will have. Also to the cam has alot to do with what size head is used.

Something in the 272/276 @ .050 with a 104 CL can use the small 302 head to the engines adavantage, due to the large amount of overlap the cam has and the loss of port velocity and cylinder pressure. This is why I say that not every head will work on every engine. To me it's more of a specific head for a given engine. I guess I science my engines out too much, so true others may not have the same results that I get, but then hey anything I have is for sale. LOL