2001 Mustang SVT Cobra Promotional Sales Brochure
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This is the main text for the unique 4.6L V8 of the 2001 Cobra. It reads, SINCE 1996, THE SVT COBRA has featured a potent, aluminum-alloy V8 with double overhead cams, four valves per cylinder, and a 6,800-rpm redline - a quintessential modern performance engine. ARCHITECTURE Carried within the robust structure of the aluminum-alloy SVT Cobra block is a fully counterweighted, forged-steel crankshaft. Each main bearing cap is secure with six high-tensile bolts, spreading loads over a broad area of the block. The eight shallow-skirt, aluminum-alloy pistons provide a compression ratio of 9.85:1. The aluminum-alloy SVT Cobra cylinder heads follow classic double-overhead-cam design. The camshafts are chain-driven, and the cam lobes activate roller-finger followers that incorporate hydraulic valve-lash adjusters. BREATHING The SVT Cobra V8 begins the process of making horsepower with a specially designed conical air cleaner that sites just ahead of an 80mm mass-air flow sensor. Farther downstream, butterfly valves in the twin 57mm throttle body bores open simultaneously, not in stages. This gives the engine exceptional throttle response by quickly yet progressively delivering large volumes of air to the cast-alloy plenum. The upper intake manifold deploys eight tuned runners that feed into eight pairs of intake valves. The runners, and the intake ports cast within the head, cause the fuel-air charge to "tumble" as it enters the combustion chamber, making the charge more volatile and thus more powerful. The high-silicon, molybdenum-iron exhaust manifolds feed spent gases into a stainless-steel dual exhaust system, designed to maximize flow through the low-restriction mufflers and 2.25-inch exhaust pipes. ELECTRONICS The Ford EEC-V computer system monitors engine functions, including air flow, rpm, crankshaft position and camshaft position. It can make millions of adjustments per second, optimizing the spark and fuel-air mixture to maximize power. And each cylinder is fired by a distributorless, coil-on-plug ignition system, which brings a greater measure of ignition precision and simplicity. For 2001, the SVT Cobra V8 meets federal Transitional Low Emission Vehicle (TLEV) standards for tailpipe emission. COOLING Consistent oil temperatures in this high-performance engine are achieved with a water-to-oil cooler mounted between the left side of the block and the oil filter. The engine cooling system is designed to maintain normal-range coolant temperatures, even under high-performance conditions. DRIVELINE The SVT Cobra V8 delivers power through an 11-inch clutch plate to the rugged Tremec TR3650 five-speed transmission, and on to the rear wheels through a limited-slip differential and a 3.27:1 axle ratio.

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