Power to weight ratio. Making a street car respond is a simple as increasing the power available to move a given amount of weight. The bottom line is torque. The max cubic inches in the 347 Street Fighter makes it easy to move your car, and the exclusive CHP dry oil ring design gives you a combination that will be effective for years to come. 347ci Street Fighter-GT 4.000 to 4.040 bore - 3.400 stroke - Flat top piston • Cast steel crankshaft • CHP CNC Beam forged steel connecting rods (5.400) • Probe SRS forged pistons • The assembly is balanced and blueprinted.