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Stage 1 consists of porting the upper intake manifold with 1.5-inch shortened runners and greater plenum volume; a ported lower intake manifold; ported cylinder heads; three-angle valve work; and a custom-ground camshaft, which yields 214 degrees duration at 0.050 inch and 0.483-inch valve lift in a symmetrical pattern. With just these mods, rear wheel horsepower shot up to 155 at the factory 4,500-rpm rev limiter. Allowing for driveline power losses, this adds up to about 186 hp at the crankshaft. That's 41 hp with the camshaft and the head mods-all this with stock pushrods and 1.73 ratio rocker arms.
This stage takes us into greater potential with an adjustable fuel pressure regulator; a fuel pressure gauge; and a custom dyno-tuned computer chip to provide optimum ignition and fuel curves, increased rpm and top speed limits, lower fan "on" temperatures, and optimum AODE/4R70W shift patterns. With these simple modifications, the 3.8L V-6 delivered 177 rear wheel horsepower and 212 hp at the crankshaft. That's a 67hp increase more than factory. This maximizes the naturally aspirated potential of the Essex V-6.
Fuel And Ignition Events Improved To Bring Super Six 185 Stage 3 takes us to an overbored 54mm throttle body and a 190-lph fuel pump. Along with these modifications, fuel and ignition events improved to bring Super Six 185 rear wheel horsepower and 222 hp at the crank at 6,000 rpm. What does this mean in the real world? It means 15.0 seconds in the quarter-mile; a stock V-6 Mustang clocks 16.9-17.3. If you figure the new 151/48-inch long-tube headers into this equation, even greater power is possible.
When we step up to Stage 4, the Hi-Po 3.8L Power Pack takes on a significantly more powerful personality. Installing a Vortech supercharger, a 75mm mass airflow sensor (MAF), 30-pound Ford Racing Performance Parts injectors, and a 6:1 FMU, boost exceeds 10 psi at 6,000 rpm. The key is safe computer function that won't harm the engine. We want a 12.4:1 air/fuel ratio. With all of this in tow, Super Six was able to pull 305 rear wheel horsepower from the 3.8L V-6. With a smaller Vortech compressor pulley, more than 330 hp is possible.
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