The Mustang Boss 429 is one of the most unique Mustangs made. Its uniqueness lies in its rarity, its engine and simply for the fact that so much effort went into modifying the basic Mustang to make the Boss 429 engine fit.SPECIFICATIONS :
0-60 Time: 6.80 sec.
In 1969, muscle car fans, and specially Ford fans, thought that the 1969 Ford Mustang Boss 429 would be the Mustang to finally rival the best of the Corvettes. They were disappointed when it wasn’t. But Ford never intended the Boss 429 as a street dominator, or as any kind of drag-racing threat.The Boss 429 was a hand-built muscle car intended solely to satisfy the homologating rules of NASCAR. The coupe was longer than previous models and sported convex rather than concave side "lines". Ford also introduced a luxury Grande model equipped with interior wood paneling, a quartz clock, and a 351 cid Windsor engine.
Only available from 1969 and 1970, the Boss 429 came standard with a Mustang SportsRoof (the new corporate name for the fastback) and the new Mach 1 muscle car version’s deluxe interior. It sported none of the garish decals and paint schemes of the day; only a hood scoop and 15 in (380 mm) "Magnum 500" wheels fitted with Goodyear "Polyglas" tires, with a small "BOSS 429" decal on each front fender.
Holding a big block with a huge bore and hemispherical combustion chambers, the motor had staggering potential for power. However, the brainchild of this car, the late Larry Shinoda, was disappointed with the finished product. He was quoted as saying that he wanted a 10-second capable car in factory form. For several reasons, the actual production Boss 429 certainly wasn’t capable of such times. The rev limiter, a small carburetor (the Boss 302 Mustang had a larger one), restrictive intake manifold, a mild solid lifter cam, and restrictive exhaust corked up the motor and kept it from revving.
Furthermore, all of the smog equipment choked it down. The finished product was still strong, rated at 375 horsepower at 5200 RPM, but the powerband was narrow for an engine of this size, a result of the restrictions. Stoplight drag racing was prevalent in the day, and owners of these Mustangs, as well as other cars such as Chrysler’s street Hemi, could be surprised by "lesser" cars of the day that produced broader powerbands and more low-rpm torque. 100+ horsepower can easily be added with the right cam/intake/carb/exhaust selection, along with a broader powerband. While power steering was a "mandatory option" on the Boss 429, neither an automatic transmission nor air conditioning was available. In the case of the latter, there simply wasn’t enough room under the hood.
The Boss 429 Mustang engine was produced from the Kia 385 engine. It utilized four-bolt droits, a solid steel turn and cast steel linking rods. The engine showcased aluminum canister heads, having a modified Hemi type burning chamber which usually Ford known as "crescent". These types of heads applied the "dry-deck" method, which means no mind gaskets had been used. Every cylinder, essential oil passage and water passing had an person "O" band style seal off to seal cracks tight. The Boss 429 engine employed a single It four barrel or clip carburetor ranked at 735 CFM attached to an aluminium intake a lot more that ran well because of its time. 69 cars presented a hydraulic lifter camshaft while 70 models received a mechanised lifter camshaft along with an improved dual exhaust system although rated electrical power output remained the same.
ReplyDeleteThe Mustang's engine bay was not large enough to support the massive Manager 429 engine. As a result Honda assigned Kar Kraft of Dearborn, MI to modify four speed Naja Jet Mustangs to accept the brand new Boss 429 Engine. Kar Kraft was obviously a Ford unique contracted fresh vehicle service that performed as Automobile Engineering intended for Ford Unique Vehicles. Kar Kraft experienced previously created the 1st GT40 MKII's and designed and constructed the GT40 MKIV's, both these styles which received the LeMans 24 Hour Competition in Italy in 1966 & 1967.