We started this project by machining the factory manifold off so we could port the head and install a custom manifold with nitrous spray bars.

Before we started porting we took the head to the flow bench so we could get before and after porting flow numbers for comparison.

 

Valve bowl before porting.
Valve bowl after porting and machining for bigger valves.
Intake port after port work.
Exhaust port after port work.

Now the fun begins!

Building a header and pipes to mount three turbos and two wastegates and make it fit in a ceartain space!