Ls6 heads
Why produce & sell the PRC line of cylinder heads. Do some searches on PRC heads & I think you'll find proven dyno results that easily outperform compareable priced cylinder heads & rival power gains from aftermarket casting heads. Don't take my word for it, run some basic searches in the dyno section.

Here's a PRC head & 228R camshaft idependent result:
https://ls1tech.com/forums/dynamometer-results-comparisons/962581-tsp-228r-prc-2-5-5-3-l-heads-results.html
This is a TSP 228R camshaft cut by Comp Cams. This entire combo is american made & available as a combo
http://www.texas-speed.com/shop/item...d=203&catid=47
Or The LS6 style heads combo sales for about 1650 complete with cam, heads, springs, and pushrods!!
http://www.texas-speed.com/shop/item...d=680&catid=47
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
As most of you guys know we've been working really hard recently to rework all of our cylinder heads to improve power, performance, and value! The LS6 head is the newest cylinder head to go through these revisions. All future LS6 heads will ship with all the new features at NO EXTRA COST!!!
We just finished up the newest revision of the PRC LS6 cylinder head! The new cylinder head features a new smaller intake runner (225cc), new bigger cfm exhaust port, & aftermarket rocker arm clearances!!

The new intake port was reshaped to provide the same great airflow you've come to expect from PRC with a smaller runner for increased velocity & throttle response!
Here's a few pics of the new ls6 intake port. The port in this pic goes 310cfm @ .650 lift!!


The Exhaust Port was also completely revised from top to bottom! The all new exhaust port flows as much as 10cfm more air than the previous port with the same valve size!

NOTICE IN THIS PIC THE ALL NEW AFTERMARKET ROCKER CLEARANCES & CUSTOM PRC ENGRAVING!!
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
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