Description
Description
Stage 2 | Stage 3 | Stage 4 | |
Intake Porting | Yes | Yes | Yes |
Exhaust Porting | Semi | Semi | Semi |
Combustion Chamber Reshape | Optional | Required | Required |
Flap Delete Kit | Optional | Required | Required |
Replace Intake Valves Seats with AMPCO 45 | No | No | Yes ( +1.5 mm ) |
Replace Exhaust Valve Seats with AMPCO 45 | No | Yes ( +2.0mm ) | Yes ( +3.0 mm ) |
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