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THUNDERBIRD
 

Engine Torque Values
 
Year Engine Spark Plug Cylinder Head Bolts Intake Manifold Exhaust Manifold Rocker Arm Shaft Bracket Rocker Arm Cover Connecting Rod Cap Bolts Main Bearing Cap Bolts Flywheel to Crankshaft Vibration Damper to Pulley
1959-60 8-292 15-20 65-75 23-28 23-28 12-15 2-2.5 45-50 95-105 75-85 85-95
8-352 15-20 80-90 23-28 23-28 40-45 4-7 45-50 95-105 75-85 130-145
8-430 15-20 95-105 23-28 23-28 40-45 4-7 45-50 95-105 75-85 75-90
1961-68 All 15-20 80-90 32-35 12-18
1
 40-45 4-7 40-45 95-105 75-85 70-90
1968 8-429 15-20 130-140 25-30 28-33 65-75
2
 2.5-4 40-45 95-105 75-85 75-90
1969-71 8-429 15-20 130-140 25-30 28-33 65-75
2
 5-6 40-45 95-105 75-85 75-90
1972 8-400 10-15 95-105
3
 12-16 18-25
2
 3-5 40-45 95-105 - 70-90
1972-73 8-429,460 15-20 130-140 25-30 28-33 18-25
2
 5-6 40-45 95-105 75-85 70-90
1974-75 8-460 10-15 130-140 22-32
4
 28-33 18-25
5
 5-6 40-45 95-105 75-85 70-90
 

Torque Specs are for clean and lightly oiled threads in Ft.-lbs.
 

1 - 1965-68 V8-390, 1966-67 V8-428, 18-24 ft.-lbs.,

2- Rocker arm stud to cylinder head.

3- 1/4" bolt 6-9 ft.-lbs., 5/16" bolt 21-25 ft.-lbs., 3/8" bolt 27-33 ft.-lbs

4- 1975 25-30 ft.-lbs

5- Rocker arm fulcrum bolt to cylinder head