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Plymouth "A" Engine V8

277, 301, 303, 313, 318, 326 cid.

Firing Order

Cylinder Numbering Distributor Rotation

Rotor Under Cap Spins:


Torque Specs

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 (2 bolt) Engine Oil 85 ft-lbs.

If you are using ARP bolts, you MUST use
their specs.  Click Here!
Connecting Rod Bolt Engine Oil 45 ft-lbs.

Cylinder Heads

Engine oil

(blind hole)


(water jacket)

85 ft-lbs.

Rocker Studs (screw-in) Engine Oil
Oil Pump Engine Oil
Oil Pan Engine Oil
Cam Sprocket (upper gear) Thread Locker
Timing Cover Engine Oil

Intake Manifold

(Cast Iron Heads)

Non- Hardening Sealer 40 ft-lbs.
Valve Cover Engine Oil
Exhaust Manifold Anti-Seize Lubricant 25 ft-lbs.
Spark Plugs No Lube or Sealer

Flexplate (Automatic)

Flywheel (Clutch)

Thread Locker
Clutch Pressure Plate Thread Locker


(Harmonic Damper)

Engine Oil 135 ft-lbs.


(Transmission to Block)

Engine Oil 25 ft-lbs.

Head Bolt Tightening Sequence

This is only a partial list, help us fill it out by sending an email.

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