Originally Posted by cdminter59
Horsepoweraddiction, Can you give me the casting # off the rectangular port heads. I want to find out the chamber volume and port size. I have been looking online but there are too many heads with different size chambers. I was reading a couple articles comparing rectangle ports and oval ports. The oval ports performed better on the low end rpm but the rectangle ports caught up on the high rpm end. If you had them and money is a problem why not use them until you can afford something better?
The head casting number is 3919840 and I like that idea just go with that til I get a set of aluminum heads which I really want. But I know these heads are great. And to 454c10 I'm planning on running a 3.73 and I can probably put a stall in it if I have to.