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The result is a big-block Ford beast with 557 ci, to be exact. That’s 9.1 liters for you youngsters. Bouchard estimated 700 hp and 700 lb-ft of torque for a $10,000 budget.
The Z-11 RPO Mark II 427ci big-block with its 4.3125-inch bores and 3.650-inch stroke was a true racing engine born strictly for stock car racing though some have applied it to drag racing.