Includes CNC Ported intake and exhaust ports OEM Guides left in for porting Precision CNC valve job using the latest NEWEN Fixed Turning technology Resurface Recommended Use All Motor Street and Race Engines Perfect for stock to basic 2.0L engines Perfect for 2.0L Road Race where midrange punch must be retained Turbo and Supercharged Suitable for all out 2.0-2.4L Road Race engines with high hp in mind and low end, off corner acceleration This is our preferred cylinder head for SFWD and AWD Turbo cars exceeding 1000whp Features & Benefits The RBB TSX heads have the smallest port and least material available for machining when compared to the other K-Series castings. This port was designed to fit in this casting, and takes a mediocre 275cfm cylinder head and transforms it into a 340 cfm race winner! Slow-cut precision 5-axis cnc porting, second to none on machining quality. 45 degree valve job designed for long life and durability. Unique power producing exhaust port design. Smaller intake port volume, high air speed port design. Optional full length bronze manganese valve guide for valve stability. Port walls are left extra thick for high boost applications when used in other castings. Our heads are all shipped with installation tips, a sheet of desired clearances for setting up your engine, and a flow chart from your head.
