Pontiac Engine Specs

Pontiac Engine Torque Specs

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. 
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.

 

PONTIAC ENGINE CHART
ENGINE BORE STROKE MAIN DIA.
326 CU. IN. Stock Bore 3.720 3.750 3.00
30 over 3.750    
60 over 3.780    
350 CU. IN. Stock Bore 3.875 3.750 3.00
30 over 3.905    
60 over 3.935    
389 CU. IN. Stock Bore 4.062 3.750 3.00
30 over 4.092    
60 over 4.122    
400 CU. IN. Stock Bore 4.120 3.750 3.00
30 over 4.150    
60 over 4.180    
421 CU. IN. Stock Bore 4.093 4.000 3.25
30 over 4.123    
60 over 4.153    
428 CU. IN. Stock Bore 4.120 4.000 3.25
30 over 4.150    
60 over 4.180    
455 CU. IN. Stock Bore 4.151 4.210 3.25
30 over 4.181    
60 over 4.211    
BPI ASSEMBLIES/ENGINES
CU. IN. BORE STROKE MAIN DIA.
461 CU. IN. BPI 4.155 4.250 3.00/3.250
467 CU. IN. BPI 4.181 4.250 3.00/3.250
474 CU. IN. BPI 4.211 4.250 3.00/3.250
496 CU. IN. BPI 4.310 4.250 3.00
505 CU. IN. BPI 4.350 4.250 3.00
511 CU. IN. BPI 4.375 4.250 3.00
487 CU. IN. BPI 4.155 4.500 3.00/3.250
494 CU. IN. BPI 4.181 4.500 3.00/3.250
501 CU. IN. BPI 4.211 4.500 3.00/3.250
525 CU. IN. BPI 4.310 4.500 3.00
535 CU. IN. BPI 4.350 4.500 3.00
541 CU. IN. BPI 4.375 4.500 3.00