AMG M157 Cylinder Head Package

This cylinder head package comes standard with our street series long block. Easily functions past the 1000hp mark. 

*Must supply good core heads

- Soda blasted restored appearance

- Custom bronze valve guides

- CNC Newen Valve Job

- Hand blended ports 

- CNC Surfaced to single digit Ra finishes

-Ultrasonically Cleaned

-Assembled with OE valvetrain with modified spring pressures for added boost levels