I feel like I have been splitting hairs over this but any input would be greatly appreciated. I have both a 530 and a 405 head that i want to use for my 245 turbo build but I'm unsure which one will benefit me the most . My aim will be for the 350 hp but hopefull for more.
Block is a b23 with h beam rods, turbo will be t3/t4 turbo, Microsquirt and a couple other things i can mention if needed.
-405s have big coolant passages if I'm correct and love to blow head gaskets under boost but flow great, 530s have basic flow but can be ported decent. That's it for my knowledge so far on the heads would love to have more input.