ferrari 3.5 liter cylinder head modifications ported ferrari cylinder heads forzaferrariwebsite1006012.jpg
NOTE: NO TINY SHIM ON TOP OF END OF VALVE STEM
NOTE: TINY SHIM ON TOP OF END OF VALVE STEM
THE CYLINDER HEADS HAVE BEEN PORTED & HAVE CUSTOM VALVE SEATS WITH OVERSIZE INTAKE VALVES & REDUCED SIZE EXHAUST VALVES. CUSTOM VALVE SPRINGS, RETAINERS & KEEPERS.

THE HEADS FEATURE A SHIM UNDER LIGHT WEIGHT CAM FOLLOWER
CUSTOM CAMSHAFTS WERE DESIGNED FOCUSING ON TORQUE & NOT HIGH RPM HORSEPOWER, THUS CREATING A VERY FLAT TORQUE CURVE STARTING AT 239 FT LB AT 3,000 RPM TO 270 FT LB AT 5800 RPM
WITH JUST A BASE MAP ON A DYNO. IMPRESSIVE!
VALVE LIFT ON INTAKE IS .445
VALVE LIFT ON EXJUST IS .395
NOTE: CAM FOLLOWER HAS A FLAT SURFACE AS VALVE SHIM IS UNDERNEATH CAM FOLLOWER, UNLIKE OEM
CAM LOBES AFTER ENGINE RE ASSEMBLY TO VERIFY THAT ALL INTERNALS WERE GOOD AFTER FIRST DYNO SESSION.
 THIS PHOTO WAS TAKEN AFTER 2ND DYNO SESSION & CAR BEING STREET DRIVEN DURING BREAK IN PERIOD.
Previous
Ferrari 3.5 liter 308 cylinder head modifications