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Pontiac V8

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

Firing Order

Cylinder Numbering Distributor Rotation

Rotor Under Cap Spins:

Counter

Clockwise

(*307 rotates Clockwise)

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

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.

 
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