Modular 4.6 and 5.4 Modular 2 valve ported cylinder heads gm ls 300" material above top ring

300" material above top ring land) With Gas Port For Improved Ring Seal Wrist Pins: Upgraded Tool Steel

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Theses engines are suitable for 1600-2100 Hp levels

We stock sleeves and components for quick delivery

although we customers making more power with these same packages

Modular 4.6 and 5.4 Modular 2 valve ported cylinder heads gm ls 300" material above top ringMesa Balancing Racing Engines has been involved in airflow development for over 20 years and we clean inspect hand port and machine the majority of the cylinder heads used in many of our race and championship winning engines for our customers and many private label internet sales companies . All of our cylinder heads can be supplied assembled which we strongly recommend from an assembly fitment standpoint or bare at customers request. We can also port