next thing I want to try and big Thanks to Dustin for sending some banged up heads, is stuffing the 03-08 5.7 head with a 6.1 valve. I really think the original 5.7 heads can be an awesome high velocity head which I would think 320cfm around .6 is easily possible because I hit 312 opening the throat probably a little to far
Here is a set of early 5.7 heads that I picked up over the weekend, they have new seats, cut for 2.100/1.550 valves, ports are huge (required pushrod sleeves) so I doubt that they still have high velocity. I plan to get have them flow tested locally as the claimed flow numbers seemed inflated to me, if they are suitable I will have chambers welded closed and use them.
