P2P Stage 4 EJ Head Single AVCS

Our Stage 4 head package matches GSC dual springs, largest lift/duration S3 cams, +1mm Intake and Exhaust valves and a full port to maximize airflow in the higher rpm range. We replace the stock seats with a proprietary seat that is larger in diameter and deeper in the head to remove the risk of cracking seats with +1mm valves. These heads are far superior to stock heads and are made to last. The New OE castings are taken to our in-house machining center and the valve seats are cut with radiused multi-angle seat cuts that allow for maximum airflow, while retaining seat longevity. The porting is hand ported as this allows for the most precise flow matching capability. All castings shift slightly, and if a head is not ported by hand and tested, the results in each runner may vary if, for example, a CNC port without hand porting is done. The spring and cam combination is perfect for our stage 4 or stage 5 short blocks and their ratings. Our engine program has been proven time and time again on and off the track. We have countless race hours on these engines as well as millions of street miles that prove you can have the best of both worlds. We balance and blueprint everything in these engines. Our goal is to provide the customer, you, with entry to a level of engine building normally found in super cars and race teams. Our goal is your success, we are not afraid of any problem, and will assist you with any questions.