gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Valve Spring > < Valve Rocker Arm Cover Replacement (Left)|Page 3358
Page 1
background image

Valve Seat: Specifications

Seat Angle (Intake/Exhaust) .................................................................................................................................................................................  46 degrees 
Seat Runout (Intake/Exhaust) .....................................................................................................................  0.0500 mm (Maximum) (0.002 inch Maximum)
Seat Width Intake ..........................................................................................................................................................  0.800-1.200 mm (0.030-0.060 inch)
Seat Width Exhaust .......................................................................................................................................................  1.651-2.159 mm (0.060-0.095 inch)

Valve Spring > < Valve Rocker Arm Cover Replacement (Left)|Page 3358