Stage 0 - F20C / F22: inspect, disassemble, hot tank, soda blast, performance valve job, grind valves, install bronze exhaust guides, guide seals, resurface deck, blueprint, and assembly.
Stage 1 - F20C / F22: inspect, disassemble, hot tank, performance valve job, grind valves, install bronze exhaust guides, guide seals, resurface deck, blueprint, inlinePRO dual valvesprings/dual spring bases/titanium retainers, and assembly.
Stage 2 - F20C / F22: inspect, disassemble, hot tank, soda blast, performance valve job, grind valves, install bronze exhaust guides, guide seals, resurface deck, blueprint, inlinePRO dual valvesprings/dual spring bases/titanium retainers, Stainless Steel valve set all motor/turbo low boost and assembly.
Stage 2.5 - F20C / F22: inspect, disassemble, hot tank, soda blast, performance valve job, grind valves, install bronze exhaust guides, guide seals, resurface deck, blueprint, inlinePRO dual valvesprings/dual spring bases/titanium retainers, high HP Stainless Steel intake valve/Inconel exhaust valve, and assembly.
Stage 2.5x - F20C / F22: cylinder heads: inspect, disassemble, hot tank, performance valve job, grind valves, install bronze 6.6mm exhaust guides, guide seals, resurface deck, blueprint, inlinePRO dual valvesprings/dual spring bases/titanium retainers, Hardened Locks, 5.5mm HeavyDuty Intake Valve/Inconel 6.6mm exhaust valve, and assembly.
Stage 3 - F20C / F22: cylinder heads: inspect, disassemble, hot tank, performance valve job, port&polish, grind valves, install bronze 6.6mm exhaust guides, guide seals, resurface deck, blueprint, inlinePRO dual valvesprings/dual spring bases/titanium retainers, Hardened Locks, 5.5mm HeavyDuty Intake Valve/Inconel 6.6mm exhaust valve, and assembly.
Stage 4 - F20C / F22: inspect, disassemble, hot tank, soda blast, performance valve job, port&polish, grind valves, install bronze intake/exhaust guides, guide seals, resurface deck, blueprint, inlinePRO dual valvesprings/dual spring bases/titanium retainers, high HP Stainless Steel over size intake valve/Inconel oversize exhaust valve, oversize intake seat w/installation, and assembly.
