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Inline 4 Cylinder Firing Orders:
| Make |
Engine |
Firing Order |
| Chrysler |
Most Inline 4 Cylinders |
1-3-4-2 |
| Ford |
Most Inline 4 Cylinders |
1-3-4-2 |
| General Motors |
Most Inline 4 Cylinders |
1-3-4-2 |
Inline 6 Cylinder Firing Orders:
| Make |
Engine |
Firing Order |
| Chrysler |
Most Inline 6 Cylinders |
1-5-3-6-2-4 |
| Ford |
Most Inline 6 Cylinders |
1-5-3-6-2-4 |
| General Motors |
Most Inline 6 Cylinders |
1-5-3-6-2-4 |
V8 Firing Orders & Distributor Rotation:
| Make |
Engine |
Distributor Rotation |
Firing Order |
| AMC |
Most V8 Engines |
Clockwise |
1-8-4-3-6-5-7-2 |
| Buick |
Most V8 Except HEI |
Clockwise |
1-8-4-3-6-5-7-2 |
| Chevrolet |
All V8 Engines |
Clockwise |
1-8-4-3-6-5-7-2 |
| Chrysler |
All V8 Including Hemi |
Clockwise |
1-8-4-3-6-5-7-2 |
| Ford |
5.0L HO, 351, 400 |
Counter-Clockwise |
1-3-7-2-6-5-4-8 |
| Ford |
All V8 Not Listed Above |
Counter-Clockwise |
1-5-4-2-6-3-7-8 |
| Oldsmobile |
1967 And Up V8 |
Counter-Clockwise |
1-8-4-3-6-5-7-2 |
| Pontiac |
Most 1955-81 V8 |
Counter-Clockwise |
1-8-4-3-6-5-7-2 |
| Pontiac |
307 |
Clockwise |
1-8-4-3-6-5-7-2 |
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