v2.50PF/23º
2.47in² MIN
64-72cc chamber
1.320 x 2.230 opening
Fel Pro 1206 (trim)
2.53in² AVG CSA
5.47 port length
227cc runner
2.080 intake w/33º BC
1.600 exhaust 
4.155 fixture 
.200 141/113
.300 201/155
.400 248/189
.500 290/212
.600 318/230
.700 325/241
.800 330/248
.900 334/252
1.00 338/254
​
NOTES
I = -.050/SRH1115
​E= -.150/SRH1005

I = -.065/Manley .310
E = -.120/Manley .310

I = .00/SRH2100/SRH50
E= .100/SRH1600/SRH45

The VFactor v2.50PF/23º has quickly become a favorite among engine builders and racers Worldwide!  This cylinder head is a very popular choice for 406-421's.  You need a .150 offset stud rocker to fit a 3/8 pushrod.
∙VFactor v2.50PF- 640/585 wHR Pump Gas on 420, Edelbrock 2925 HERE
∙VFactor v2.50PF- 710hp@7200 NA on 406, BURR Holley 300-110 
​∙VFactor v2.50PF- 660@6400 Pump Gas on 421, Edelbrock 2982
This cylinder head just won a NHRA National Event in Super Comp!  YES, a SBC won Super Comp!!!-2018 Heartland Nationals

​VFactor v2.50PF/23º 
​Fully CNC SRH priority ProFiler casting, Custom Multi-Angled Valve Job, MLS Surface finish, Guides Sized.

OPTIONS​​​

• ​​$500 Hand Finish
• $800 Copper Seats