“To the best of my knowledge,” said Jon Kaase, “prior to last year’s Engine Masters Challenge, the most powerful naturally aspirated Ford Y-block engine produced around 600 hp.” This enduring feat, however, was substantially exceeded on January 17, 2016, when Kaase’s efforts raised the peak power record to 709 hp @ 6,300 RPM and 748-lb.ft. of torque at 5,400 RPM.

Read the full story compliments of Hemmings Muscle Machine’s July 2016 issue.