is it possible to use the PRC 200cc Terminator Series Cylinder Heads with the ms4 on a stock 346 without flycutting... or am i better of with stage 1 ls6?
my goal is to make 460-480 rwh n/a. thanks

 

No the PRC Stage 1 is the only heads besides stock that dont require flycutting. They sink the valves in the heads a little deeper to gain PVC. I went with the MS4 and PRC's should be running in a few days.

 

Anyone know what the SRC, DCR and potential HP difference would be on a full bolt on MS4 setup with a)PRC Stage 1 b)Terminator heads and flycutting?

 

That all depends on compression achieved, quench, specs of the MS4 used, degreing the cam etc...
You could see anywhere to 30 rwhp gain.

 

I know that there is someone running around here with MS4 and Terminators that, if I am not mistaken made just shy of 500rwhp. The PRC Stage 1's Im not sure but will be posting numbers as soon as I get my car up and running

 

Oh and what he said

 

Cool. I know there's more too it than just a quick question and simple answer.

I was just trying to figure out cost effectiveness. I was planning on PRC S1 and MS4 on a 111 LSA, however I saw a dyno chart from TSP for 480rwhp using the Terminator heads. And was curious what difference would be between them. Becuase it's a fair amount more money to get the Terminator heads when factoring in the need to flycut. I'd say it's looking like nearly double the cost of the S1's. So if there's only likely to be 20rwhp or so in it, I probably wouldn't bother with the extra cost and hassle.

I look forward too seeing what results you get.