Mopar Big Block Bolt Torque Specifications
Mopar B/RB engines – 350/361/383/400/413/426W/440
Always torque bolts in three equal increments
| Bolts or Parts | Lube or Sealer | Torque to: |
| Main Caps | Engine Oil | 85 ft-lbs. |
| Connecting Rod Bolts (Plain) | Engine Oil | 45 ft-lbs. |
| Connecting Rod Bolts (Heavy Duty) | Engine Oil | 55 ft-lbs. |
| Crankshaft Rear Bearing Seal | Engine Oil | 30 ft-lbs. |
| Cylinder Heads
Iron Heads |
Engine oil
(blind hole) Sealer (water jacket) |
70 ft-lbs. |
| Rocker Shaft brackets | Engine Oil | 25 ft-lbs. |
| Oil Pump Cover | Engine Oil | 10 ft-lbs. |
| Oil Pump | Engine Oil | 35 ft-lbs. |
| Oil Pan | Engine Oil | 15 ft-lbs. |
| Camshaft Locking Bolt | Thread Locker | 35 ft-lbs. |
| Timing Cover | Engine Oil | 10 ft-lbs. |
| Intake Manifold
(Cast Iron Heads) |
Non- Hardening Sealer | 40 ft-lbs. |
| Valve Cover | Engine Oil | 6 ft-lbs. |
| Water Pump | Non- Hardening Sealer | 30 ft-lbs. |
| Fuel Pump | Engine Oil | 30 ft-lbs. |
| Starter mounting Bolts | Engine Oil | 50 ft-lbs. |
| Exhaust Manifold | Anti-Seize Lubricant | 30 ft-lbs. |
| Spark Plugs | No Lube or Sealer | 20 ft-lbs. |
| Flexplate/Flywheel Cap Screws | Thread Locker | 55 ft-lbs. |
| Flexplate to Torque Converter | Thread Locker | 270 in-lbs. |
| Centerbolt
(Harmonic Damper) |
Engine Oil | 135 ft-lbs. |
| Bellhousing
(Transmission to Block) |
Engine Oil | 50 ft-lbs. |
