Picture of the engine in a 1991 Taurus SHO. I had one of these. A 3 liter cast iron Ford "Vulcan" block with Yamaha designed aluminum DOHC heads and two stage induction system. Long runners were for low end torque and the vacuum operated short runners were for high RPM power and opened at 3,800 RPM. Their opening was not subtle and felt like the secondaries opening on a big 4 BBL carb. 7,000 RPM redline, which was high for the era. And the mechanical sound of the valve train was enough to give me chills. A sweet, sweet motor!
This was one of my favorite cars or all time. I put a boatload of suspension improvements on it, including Baer brakes and forged 17 inch Fittipaldi wheels, which seemed absolutely massive at the time.
Scott
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