whats so special about corvette heads on your motor? If the corvette heads that your talking about are LT1 heads, then they probably flow the same. If your talking about an early style set of vette heads, they won't work, because LT1's have reverse cooling. you just want to save your bucks and buy a nice set of edelbrock, Trick flow or AFR LT1 heads they all flow a lot more and with a good roller cam, 400hp is in the neighborhood, good luck with your project