- CNC Ported intake and exhaust ports
- Manganese Bronze Valve Guides (16)
- Oversized Intake Seats (8)
- Precision CNC valve job using the latest NEWEN Fixed Turning technology
- 4P 37mm Intake Valves (8)
- 4P Custom Exhaust Valves (8)
- Copper seats are only recommended for those using Titanium valves. Otherwise they are not needed.
- Designed specifically for 2.5L to 2.7L drag race engines, serious max effort DRAG RACE ONLY! Over 425whp Capable on stock stroke!
- OGS All Motor World Record - Matt Monday - 9.44@ 143 mph
- The last 4 HDAY All Motor Titles have been won by Super99 powered race cars.
- WCF 2019 M1 power was dominated by Super99 power...the ONLY 4 cars in the 9.4s were all powered by 4P Cylinder Heads
- Fits PRB, PPA, and PPL Cylinder Head Castings.
Features & Benefits
- 412+ CFM @ .650" lift and 15hp over the competition's best
- Exclusive 4P custom 37mm Intake Valve that is lighter than the competition's smaller valves, flows more air, and makes more power.
- Unique power producing exhaust port design and 4P proprietary valve produces 7-9hp over the competition
- Slow-cut precision 5-axis cnc porting, second to none on machining quality.
- Full length bronze manganese guide for valve stability.
- Our intake port has very little turbulence and great velocity when compared to our competitors. You can hear the difference on the bench!
- Years in testing and development with PROVEN back to back results and records to show for it.
- 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.
All heads require a core! You can send us your head, or purchase one from us at the current market price.