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Add Cylinders And Go: Check Out This LS-Based V-12 Engine On The Dyno!

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  • Add Cylinders And Go: Check Out This LS-Based V-12 Engine On The Dyno!

    In 1966 the last General Motors-built twelve cylinder engine, the famous 702ci “Twin Six”. Based upon the GMC V6 family of engines, the Twin Six utilized a good amount of parts from the six cylinders, but was it’s own cast block and not two blocks welded together. Pushing 250 horsepower and 585 ft/lbs of torque, […]

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