Nissan 300 ZX 3.0L(VG30D-VG30DTT) 1990-1996 Race Master exhaust valves. 30.5mm head diam., 6mm stem diam., stock length 103.65mm O/A, 3.5mm tip length, 25° X 11/32" underhead angle/radius, .065" margin, .080" X 45° seat, 20° dish.
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