Pontiac 265, 301, 307*, 326, 350, 389, 400, 421, 428, 455 Specifications

Firing Order


Torque Specifications

These specs may not be correct for your application. Verify your engine specs with a service manual for your year and model, always torque bolts in three equal increments
Bolts or Parts Lube or Sealer Torque to:
Main Caps Engine Oil 95 ft-lbs.
Rear Main Cap Engine Oil 120 ft-lbs.
Warning!!!     If you are using ARP bolts, you MUST use their specs.  Click Here!
Connecting Rod Bolts Assembly Lube 45 ft-lbs.
SD Connecting Rod Bolts Assembly Lube 65 ft-lbs.
Cylinder Heads Engine oil 95 ft-lbs.
Rocker Studs (screw-in) Engine Oil 55 ft-lbs.
Rocker Arm Nuts (Non-Adjustable Rockers) Assembly Lube 20 ft-lbs.
Oil Pump Bolts Engine Oil 30 ft-lbs.
Oil Pump Cover Bolts Engine Oil 15 ft-lbs.
Windage Tray Engine Oil 15 ft-lbs.
Oil Pan Engine Oil 12 ft-lbs.
Camshaft Thrust Plate Engine Oil 15 ft-lbs.
Cam Sprocket/Timing Gear (upper) Thread Locker 45 ft-lbs.
Timing Cover to Block Engine Oil 35 ft-lbs.
Water Pump to Cover Engine Oil
Single Timing Cover to Intake bolt Install rubber o-ring with light RTV silcone 10 ft-lbs.
Valley Pan Bolts Engine Oil 15 ft-lbs.
Intake Manifold (Cast Iron Heads) Non- Hardening Sealer 40 ft-lbs.
Valve Cover Engine Oil 8 ft-lbs.
Exhaust Manifold Anti-Seize Lubricant 30 ft-lbs.
Spark Plugs No Lube or Sealer 20 ft-lbs.
Flexplate (Automatic) Flywheel (Clutch) Thread Locker 95 ft-lbs.
Clutch Pressure Plate Thread Locker 25 ft-lbs.
Centerbolt (Harmonic Damper) Thread Locker 160 ft-lbs.
Bellhousing (Transmission to Block) Engine Oil 40 ft-lbs.