4P Super99 CNC Cylinder Head

  • Sale
  • Regular price $2,200.00


  • 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
  • Resurface
  • 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.

Recommended Use

  • 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.