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Home >> Pontiac >> 1989 >> Firebird V6-231 3.8L >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Oil Pump, Engine >> Dimension/Clearance Specifications
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Dimension/Clearance Specifications

Vin C & L, Gear Values
Gear Backlash 0.006
Gear To Body Clearance 0.008-0.015
Gear Endplay
Note: Measured between pump cover and end of gears using straightedge & feeler gauge.
0.0010-0.0035
Gear Pocket Depth 0.4610-0.4625
Gear Pocket Diameter 3.508-3.512
Relief Valve To Body Clearance 0.0015-0.0030