ls6 gm cnc heads?
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I've sold both (the GM heads at a previous job I was at) and to be honest you get better performance for less money with the PRC head. I can't find the flow numbers for the GM head right off-hand, but I do recall that the PRC outflowed them by about 5-15cfm all the way across the board. Let me know if I can help with your setup. We have the PRC's on the shelf ready to ship. Also since the machining is all done here locally, we have complete control over the process and the quality control measures that the heads go through before they can ship!
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!