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Home >> GMC >> 1980 >> Rally G3500, Van Cargo >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 305", 350" & 400" V8 Engines >> Torque Specifications

Torque Specifications

TIGHTENING SPECIFICATIONS

Application Ft. Lbs.
Cylinder Head Bolts 65
Main Bearing Cap Bolts(1) 80
Connecting Rod Nuts 45
Camshaft Sprocket Bolts 20
Intake Manifold Bolts 30
Exhaust Manifold Bolts(2) 20
Water Pump Bolts 30
Flywheel Bolts 60
Harmonic Balancer Bolt 60
Oil Pump Bolt 65
Rocker Arm Cover Screws 4
Oil Pan Bolts
  1/4" 7
  5/16" 14
(1) Outer bolts on 4 bolt caps 70 ft. lbs.
(2) Two center bolts on 350" engine 30 ft. lbs.