JES BR7 12* Big Spring Turbo Cylinder Heads

JES BR7 12* Big Spring Cylinder Heads- 1 Pair

100% CNC Ported to our specs, competition valve job, and hand assembled. 

BR 7 BS™ Casting
CNC Ported to JES Specs
12° Valve Angle
265cc-300cc Intake Ports
Flows Over 400 cfm
100% CNC Ported
New High Flowing Exhaust for Turbo/Blower Use
Large Valve Spring Pockets for Solid Roller Cam
Special Rockers Required (Heads are prepped for shaft rockers)
65-72cc combustion chambers
Standard Package Includes PSI .900" DR426 Springs, Ti Retainers, Ti Locks

Options available:
Stainless, Titanium, or Super Alloy Valves
Top Fuel Hoops
3* or 7* Chamber Softening
Standard Package Includes PSI .900" DR426 Springs, Ti Retainers, Ti Locks