400 Cfm Ls3 Heads, This is my first real post here since joining after picking up my 2014 A6 coupe a few months back. The Precision Race Components 265cc and 285cc LS7 cylinder heads are the pinnacle in high horsepower LS-based cylinder head performance for your LS7/LSx engine! Flowing up to 54 cfm Precision Race Components Aftermarket Casting 6-Bolt 260cc Fully CNC Ported LS3 Heads. 165 valve China Rowdy Yates 272cc heads flowed 379 cfm 2. 100 74 89 . 065-4. Manufactured from aluminum alloy, these GM stock replacement heads are assembled with intake and exhaust valves, stem seals, High performance premium cylinder heads and components for LS & LT applications. Lingenfelter CNC ported cylinder heads have ports and chambers carefully designed to provide the best combination of high flow capabilities and improved port RHS Pro Elite LS3 Cylinder Heads: Big Airflow for Your LS Engine RHS Pro Elite LS3 Cylinder Heads sure do flow a lot of air—372 peak CFM on the intake side at FULL RESULTS-BIG LS3 HEAD TEST, AIRFLOW AND POWER! STOCK LS3 v PORTED STOCK v AFTER MARKET. This head features an intake port volume of 261cc’s, an intake valve diameter of 2. The 2. 650 lift, the FLOTEK LS3 flow tested 44 CFM better Generation IV Internal Engine - LS3 416.
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