3.08in² MIN
42cc chamber
1.500 x 2.280 opening
3.12in² AVG CSA
6.155 port length
2.180-2.220 valve
1.580-1.600 exhaust
50º seats
4.155 fixture
​.200 150/94
 .300 227/135
  .400 294/195
  .500 349/224
  .600 386/247
 .700 403/261
 .800 410/274
 .900 414/281
  1.00 418/287
Pro-Filer 13º casting. CNC program designed in house. Brodix HV1300 or HV1301 fit perfectly. Edelbrock needs a spacer. SRH has spacers in stock.  Many option available! N2O chambers, 55º seats, valve sizing, call for more info!!
  • 950+ hp in NA bracket trim!!!​
  • 730+ hp in Pump Gas trim!!!
  • ​1030+ hp from 433 w/single carb!!!  Built by Dyno-Tune Engineering
  • SRH spacer plates to fit the SRH v3.25PF/13º are available! Made from aluminum plate. $185
  • Plates are also available with smaller opening that will need to be matched to your port opening.  Made for aluminum plate. $185
ProFiler v3.25/13º BARE $4900
​CHE copper seats and guides, Custom Multi-Angled Valve Job, MLS Surface finish, Guides Sized.

VFactor v3.25/13º $8950
CHE copper seats and guides, Custom Multi-Angled Valve Job, MLS Surface finish, Guides Sized, PAC 1356,Ti17 titanium retainers, Titanium valves.

UPGRADES: Prices ADDED to Package
  • Hand Finished $500
  • Soften nitrous chambers
  • Spacer plates $185
  • Jesel KPS-432195 Rocker Kit $CALL​
  • ARP 234-4337 stud kit
  • Edelbrock 2856 tall deck valley tray
  • All-Pro valley tray