2001-2016 Duramax SoCal Alternative Firing Order Drag Racing/Sled Pulling #9100AF 8.9L

2001-2016 Duramax SoCal Alternative Firing Order Drag Racing/Sled Pulling #9100AF 8.9LExtend the life of your crankshaft by changing the firing order of your engine. The OEM firing order ends with cylinder 3 and begins with cylinders 1 and 2. The result is a 3 1 2 hit to the crankshaft. Duramax cranks have a tendency to break right behind the first rod throw at the intersection of the second main journal, right where the 3 1 2 hit would stress the crankshaft the most. Coincidence? We think not. After carefully researching the different

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