543

Even he was surprised that those heads supported 700 hp. He didnt like the heads as they didnt have a raised roof or longer valves but they are what I had. I also had purchased the P4876128 M1 at the same time. As cast they work with the heads. There may be more power available with a different intake but that's what I have at the moment. I'm wondering if a 440-2 Indy intake would be a step up? But let me run what I've got for now. If I need more power I'll look into it.