Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 204Get this manual

Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 204

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5.0l305 cid5.7l350 cid ENGINES

Typical "3 Angle" Valve SeatTop Angle (30)Seat Angle (46)Bottom Angle (60)Seat Width Intake 132-116 [.031-.063] In(0.8-1.5 mm) Exhaust 116-332 [.063-.094] I