Modular 4.6 and 5.4 Modular 2 valve ported cylinder heads gm ls Crankshaft balanced within ¼ oz-in

Crankshaft balanced within ¼ oz-in tolerance

125" Proven Power Rating: 1400 RWHP Stroke: 4

although we customers making more power with these same packages

MBRE Standard Shortblock Blueprinting Process:

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

Modular 4.6 and 5.4 Modular 2 valve ported cylinder heads gm ls Crankshaft balanced within ¼ oz-inMesa 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