Engine and Suspension changes includes: ⅞-inch diameter sway bar at the rear of the car
In 1980, the factory Z28 included a 350ci engine with 190 hp at 3,800 rpm. Bill Mitchell added an Air research unit and with 7psi positive manifold pressure (with no intercooler). Mitchell also, added a 9-quart sump with a second oil filter under the left front fender and a trunk-mounted fuel cell. "The 350ci LM1 engine was curried for the turbocharger; it also got some undisclosed top-end changes (including those to the carburetor), to help airflow and velocity. Further, it incorporated an idle and cruising mode bypass system as well as a Turbonetics wastegate. The ignition was also tailored with a pressure return on the spark advance—as boost pressure climbed, the more timing it pulled out. Water injection helped with the fuel/air mix and hedged against detonation. In preparation for the forced air dance, Mitchell underwrote the rotating assembly with Carrillo connecting rods and forged pistons as insurance. Output is estimated at 330 hp. It was $15,000 over the cost of a new 1980 Z28." - Motortrend
Exterior changes includes: the Mitchell badge on each of the front fenders; a sliding sunroof; and rear quarter fender flares. The custom air dam has integrated fender flares with fog lights, as well as body striping, is strictly Mitchell. Front and Rear NASCAR windshield safety straps, 15x8 Minilites wheels with 255/60 and 275/60 Goodyear Eagle.
Interior changes includes: Recaro seats and matched them to the original upholstery. Racemark steering wheel, Nakamichi radio head unit, JVC equalizer, Phillips speakers and the hardwired Escort radar detector.
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