"I will be the first to say they are bad ass and will make serious power on any combination match to them. I was very happy to see someone take the heads I designed and do with them exactly what they where meant for. I designed the head so head porters could take them to extreme levels of efficiency. I truly didn't expect it so soon but here it is! Chad was instrumental in the "Head porter" version of the Pro-filer 23º head. He told me what he wanted and needed and Pro-filer made them. It's now a standard number." - Darin Morgan on the VFactor Pro-filer line
SRH VFactor: v2.35SB (205cc), v2.50SB (227cc), v2.50 (227cc), v2.70 (250cc), v3.00 (265cc)
Material: Aerospace Specification, A356 Aluminum Alloy (Primary Virgin Ingot)
Cylinder Head: Profiler 176X, Standard Port Location
Valve Angle: 23°
Chamber Size: 4.155 and 4.060SB (dedicated small bore)
Compustion Chamber: Heart shaped
Milling: Angle - .0070" per cc Flat - .0050" per cc
Spring Pocket: Maximum of 1.650 (no deeper) raised .100 w/machined drainback
Valve Sizes: 2.055, 2.08, 2.100, 2.125, 2.150
Bore Spacing: Standard 4.400
Deck Thickness: .500
Exhaust Port: D-Shaped
Spark Plugs: Revised location, .750 Reach, Gasketed (NGK R5671A-7 or colder)
Rocker Pad: One piece machined for stability
Rocker System: Stud Mount or Shaft System in LGM, Jesel or T&D (kits made for this head)
Valve Seats: Powered Metal or Beryllium Copper. 2.160/1.650 OD
Valve Guides: Manganese Bronze 11/32 or 5/16
Valve Covers: Standard or center bolt
End Pads: Drilled for accessories
SRH VFactor: v2.35SB (205cc), v2.50SB (227cc), v2.50 (227cc), v2.70 (250cc), v3.00 (265cc)
Material: Aerospace Specification, A356 Aluminum Alloy (Primary Virgin Ingot)
Cylinder Head: Profiler 176X, Standard Port Location
Valve Angle: 23°
Chamber Size: 4.155 and 4.060SB (dedicated small bore)
Compustion Chamber: Heart shaped
Milling: Angle - .0070" per cc Flat - .0050" per cc
Spring Pocket: Maximum of 1.650 (no deeper) raised .100 w/machined drainback
Valve Sizes: 2.055, 2.08, 2.100, 2.125, 2.150
Bore Spacing: Standard 4.400
Deck Thickness: .500
Exhaust Port: D-Shaped
Spark Plugs: Revised location, .750 Reach, Gasketed (NGK R5671A-7 or colder)
Rocker Pad: One piece machined for stability
Rocker System: Stud Mount or Shaft System in LGM, Jesel or T&D (kits made for this head)
Valve Seats: Powered Metal or Beryllium Copper. 2.160/1.650 OD
Valve Guides: Manganese Bronze 11/32 or 5/16
Valve Covers: Standard or center bolt
End Pads: Drilled for accessories