B350 1 Ton Van V6-239 3.9L (1990)
Valve Seat: Specifications
Seat Angle
45-45.5 deg
Note: Do not grind away shroud when reconditioning seats
Seat Width
Intake
0.065-0.085 in
Note: Do not grind away shroud when reconditioning seats
Exhaust 0.080-0.100 in
Note: Do not grind away shroud when reconditioning seats
Runout
0.003 in