which heads for ms4
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As most of you know the PRC 227 is the ultimate small bore LS cylinder head on the market. The as cast is a cast version of that head. While it flows just slightly less than the 227, it is still without a doubt light years ahead of ported stock castings.
You get altered valve angles, thicker decks, 6 bolts incase you upgrade in the future, 2.065/1.60 valves & we can mill to your camshaft. For example 60cc chambers & your ms4! We can even sell them to you without springs if you want to move over your prc springs from you current setup to save $$$$
Considering a ported 241 isn't even a fair comparison....
Hope this helps!
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com





