Description
- High efficiency four-valve heads
- Greater flow efficiency shortens timing durations while boosting performance
- For bigger cubic inches providing more torque and power for modified engines with an RPM range of 1600-5500
- INTAKE: Timing at .050 = 08/40.M520 grind.CL = 106.Duration at .050 = 228.Duration at .020 = 260.Valve lift= .520.Lift at TDC = .115.Hi-lift springs
- EHXAUST: Timing at .050 = 64/04.CL = 120.Duration at .050 = 248.Duration at .020 = 260.Valve lift = .520.Lift at TDC = .094
