Ford 351C, 351M 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 105 ft-lbs.

If you are using ARP bolts, you MUST use
their specs.  Click Here!

Connecting Rod Bolts      351C

*Boss 351C

Engine Oil 45 ft-lbs.

*50 ft-lbs.

Cylinder Heads                  351C

*Boss 351C

Engine oil

(blind hole)


(water jacket)

105 ft-lbs.

*125 ft-lbs.

Rocker Arms Engine Oil 20 ft-lbs.
Oil Pump Engine Oil 25 ft-lbs.
Oil Pan Engine Oil 12 ft-lbs.
Camshaft Thrust Plate Thread Locker 12 ft-lbs.
Cam Bolt (upper gear) Thread Locker 40 ft-lbs.
Front Cover Engine Oil 20 ft-lbs.
Intake Manifold          5/16 Bolts

(Cast Iron Heads)      *3/8 Bolts

Non- Hardening Sealer 25 ft-lbs.

*30 ft-lbs.

Valve Cover Engine Oil 10 ft-lbs.
Flexplate (Automatic)

Flywheel (Clutch)

Thread Locker 85 ft-lbs.
Clutch Pressure Plate Thread Locker 35 ft-lbs.

(Harmonic Damper)

Thread Locker 90 ft-lbs.

(Transmission to Block)

Engine Oil 25 ft-lbs.


Ford Big Block Casting Numbers

  1. Ford Big block cylinder head casting numbers
  2. Ford Big block block casting numbers
  3. Ford Big block crankshaft casting numbers
  4. Ford Big block connecting rod casting numbers