The SFactor 23° v2.35/205cc SBSR is a dedicated Small Bore cylinder head. This is the perfect head for 4.060" bore, 389 CI and smaller builds. Take advantage of one of the only dedicated small bore offerings in the industry!

Heads can be purchased bare or fully assembled.

The VFactor 23° v2.70/250cc LBSR is a Large Bore cylinder head. This cylinder head is an excellent option for 421-434 CI engines.

Heads can be purchased bare or fully assembled.

Standard Assembled Package includes:
Ductile Iron Valve Seats
8mm Stainless Steel Pro Valves
PAC 1226 .800" Lift Valve Springs
LGM Titanium Retainers
LGM Locators and Machined 10* Locks

For valve and valve spring options, please call us @ (256) 279 8000.

The VFactor 23° v2.50/227cc LBSR is a Large Bore cylinder head. This cylinder head is an excellent (and the most popular) option for 406-421 CI engines.

Heads can be purchased bare or fully assembled.

Standard Assembled Package includes:
Ductile Iron Valve Seats
8mm Stainless Steel Pro Valves
PAC 1226 .800" Lift Valve Springs
LGM Titanium Retainers
LGM Locators and Machined 10* Locks

For valve and valve spring options, please call us @ (256) 279 8000.

The VFactor 23° v2.35/205cc SBSR is a dedicated Small Bore cylinder head. This is the perfect head for 4.060" bore, 389 CI and smaller builds. Take advantage of one of the only dedicated small bore offerings in the industry!

Heads can be purchased bare or fully assembled.

Standard Assembled Package includes:
Ductile Iron Valve Seats
8mm Stainless Steel Pro Valves
PAC 1226 .800" Lift Valve Springs
LGM Titanium Retainers
LGM Locators and Machined 10* Locks

For valve and valve spring options, please call us @ (256) 279 8000.

The VFactor 23° v2.35/205cc LBSR is a Large Bore cylinder head. This cylinder head is an excellent option for 377-410 CI engines.

Heads can be purchased bare or fully assembled.

Standard Assembled Package includes:
Ductile Iron Valve Seats
8mm Stainless Steel Pro Valves
PAC 1226 .800" Lift Valve Springs
LGM Titanium Retainers
LGM Locators and Machined 10* Locks

For valve and valve spring options, please call us @ (256) 279 8000.

The VFactor 23° v2.50/227cc SBSR is a dedicated Small Bore Cylinder Head. This is a great option for 4.060" bore, 389 CI and smaller engines that require more airflow than the VFactor 23° v2.35/205cc SBSR.

Heads can be purchased bare or fully assembled.

Standard Assembled Package includes:
Ductile Iron Valve Seats
8mm Stainless Steel Pro Valves
PAC 1226 .800" Lift Valve Springs
LGM Titanium Retainers
LGM Locators and Machined 10* Locks

For valve and valve spring options, please call us @ (256) 279 8000.

The VFactor 23° v3.00/265cc LBMR is simply one Bad Ass 23° cylinder head! This is our largest, best flowing cylinder head and supports 850+HP N/A!

Note: The VFactor 23° v3.00/265cc LBMR does require the use of a Raised Runner Intake Manifold due to the roof being raised above the typical Standard Runner location.

Heads can be purchased bare or fully assembled.

Standard Assembled Package includes:
Ductile Iron Valve Seats
8mm Stainless Steel Pro Valves
PAC 1226 .800" Lift Valve Springs
LGM Titanium Retainers
LGM Locators and Machined 10* Locks

For valve and valve spring options, please call us @ (256) 279 8000.