Originally Posted by ap72
Here's a good set of heads for a 4" bore,
This is my 215cc offering
he also offers these heads,
which are better for a larger bore. Either head is 600+hp capable. For the intake, on a street runner I would run the 7137 Edelbrock intake.
The heads/intake combo would be about 2 grand but then you need injectors, throttle body, fuel rails, etc.
The power comparison compared to a marine intake with fastburn heads isn't even close, BUT you have to invest in a completely new intake manifold system, which isn't cheap.
I do like that 7137 intake, I was looking at its Vortec brother in the past, for use with the Largeport Bowtie Vortecs.
Those heads look like they are serious parts. Do you have personal experience with that company? HAve you used these parts?
This is starting to look like a higher rpm setup now.
Any opinions on converting a 2 bolt block to splayed mains, or would stock 4 bolt mains suffice? Would you take 2 bolt mains to 7000rpm?