Originally Posted By madscientist
Originally Posted By KOS
i think the "new" 600-13 will give em a run for there money...maybe even equal or better.the only plus is the pred still uses std bore spacing block.



If it was just about flow, than maybe the 600-13 would have some chance with the Predator.

It isn't just about flow.


yes i know .....i know of couple guys making some serious steam with those heads with track times to prove.so its not just about flow....