Ford Mustang Bullitt GT (2019)
For 1994, the Mustang underwent its first major redesign in 15 years. The new design, code named "SN-95" by Ford, was still based on the "Fox" platform, but featured dramatically new styling by Patrick Schiavone that incorporated some stylistic throwbacks to earlier Mustangs. The car remained rear-wheel drive. It greatly revived the popularity of the brand. In 1996, Mustang fans were expecting the 5.8 L (351 in鲁) V8 to make its return to the regular production. However, this is not what they got. The 5.0 GT engine was replaced by a 215 hp (160 kW) 4.6 L SOHC "Modular" V8 engine. This engine had been introduced in Lincoln models, and was part of Ford's plan to "modernize" its engine lineup. The engine has two valves per cylinders, one for intake and one for exhaust. Despite being SOHC, it was not much of a revver, and while torquey, didn't make much power past 5000 rpm. The Cobra version was updated that year with a high-revving 305 hp (227 kW) dual over head cam configuration of the 4.6 L V8. The Cobra's block, cast by Teksid of Italy, was an aluminum, cross-bolted block.
The heads had split ports and huge valves, and were arguably a little much for the street, but are still a favorite of modular race teams. A refreshed model with Ford's "New Edge" styling themes came in 1999. Gone were many of the soft lines of the early SN-95s. Moreover, bite was added to the Mustang's bark. Even though the GT's 4.6 motor was out-sized by the 346-inch LS1 Camaros, the GT was far less expensive, and didn't have the quality issues that the F-bodies were known for, resulting in the Mustang trouncing the Camaro/Firebird in sales. In 1999, Mustang GT's power increased to 260 hp (194 kW) at 5250 rpm and a healthy 302 ft路lbf (409 N鈥) of torque at 4000 rpm; redline was at 6000 rpm. Power suffered at the low end on this engine in comparison to the earlier SOHC models, but it more than made up for it at higher RPM due to the new "performance improvement" heads, cams, and intake manifold. The 4.6 Mustang now felt more like a high winding performance motor, as compared to the earlier 4.6's, which were essentially truck motors with dual exhaust.
Power came from re-designed heads and cams. As a "modular" family, earlier 4.6 L SOHC's can swap out their heads with "Power Improved" heads as offered through the Ford Parts Catalog. Due to a different combustion chamber and pistons, the compression gets bumped to about 10.7:1, and requires premium fuel. The Cobras received similar improvements, as a switch was made from "B" style heads as used in the early 32 valve DOHC Modulars to "C" heads (aka Tumbleports). Redline was set at 7000 rpm for the DOHC Cobra. The Cobra also received an independent rear suspension, which was also modular. Special Cobra R versions were available in limited editions in 1993, 1995, and 2000. Made as race cars, they were stripped of air conditioning, radios, and back seats. Unlike the early R's, one did not need a racing license to buy one of these race Cobras. The suspensions were finely tuned, and in 1995 and 2000 the Cobra R's had increased displacement engines (5.8 L and 5.4 L, respectively) that made these cars extremely potent track machines.
The 1995 Cobra R used a 5.8L V-8 with GT-40 induction and a flat tappet camshaft, and was conservatively rated at 300 hp. The 2000 Cobra R utilized a modular iron block and the best cylinder head/intake system yet for the modular motors, flowing staggering numbers even in stock form. Ford tagged the motor with ratings of 385 hp (287 kW) and 385 ft路lbf (522 N鈥) torque. Actual power was well over 400 hp. It received a Tremec T-56, 6-speed transmission, the same transmission used in the Chevrolet Corvette, Chevrolet Camaro, and the Dodge Viper. Minor exterior enhancements such as the addition of a front splitter and rear wing added down force and stability at speed. The Cobra used a side exiting exhaust system, utilizing actual shorty headers and three Borla mufflers. It also used "smoked" headlights, which made their way onto all Mustangs the following year. In 2001, Ford offered a special version of its GT with the "Bullitt" nameplate. It was reminiscent of the 1968 390 fastback model driven by Steve McQueen in the movie of the same name.
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