How much horsepower can you get out of a Boss 429?
The Boss 429 engine was a monstrous big-block, forcing changes to the front shock towers and bracing. Rated at a conservative 375 hp and 450-lb. ft. of torque, its installation in the Mustang created the ultimate super pony, albeit in low numbers.
What was the real HP of the Boss 429?
The Ford Mustang Boss 429 is considered by many to be the ultimate Muscle Car of the classic era, not just because of its engine output, but also its brakes and handling, was sold to the public as producing 375 hp at 5200 rpm while in fact the 429 produced closer to 420 hp at 5600 rpm.
How fast was the Boss 429?
|0 - 100 kph||6.8 s|
|0 - 100 mph||13.6 s|
|Est. 1/8 mile||10.2 s @ 84.5 mph|
|1/4 mile||14.0 s @ 103.1 mph|
|Top speed||206 kph (128 mph)|
A: The average price of a Ford Mustang Boss 429 is $256,194.
With the Muscle Car horsepower race escalating for the 1968 season, Ford Motor Company introduced its all-new 428-cubic inch Cobra Jet engine. With 335 hp, the potent 428 CJ offered a huge leap in power over the smaller 390-cube V8, which was the top Mustang engine for 1967.
The 1969 Ford Mustang Mach 1 Cobra Jet was reportedly one of the world's fastest cars at the time. Paired with an automatic transmission, the Mach 1 Cobra Jet could take to 60 mph from a standstill in just 5.5 seconds. It reached a full quarter-mile in 13.9 seconds at 103 mph.
Mustang Prices Through The Years
|Year / Model / Trim||Base MSRP||Adj. for Inflation|
|1969 Mustang Hardtop||$2,740||$18,817|
|1969 Mustang Fastback||$2,848||$19,558|
|1969 Mustang Convertible||$2,954||$20,286|
|1969 Mustang Boss 302 Fastback||$3,450||$23,692|
The largest Mustang engine was a whopping 7 liters in displacement. It was known as the Boss 429 engine and was offered late in 1969 and was rated at over 370 horsepower. Ford also offered the Super Cobra Jet version of the 429 which has some changes and upped power to 375 horsepower.
Rarity & Significance as a Shelby American G.T.
#0139 isn't just the rarest Ford Mustang or Shelby G.T. This convertible is undeniably the world's rarest production automobile. The only 1967 Shelby G.T. convertible ordered, serialized and built.
The 2013 Mustang Shelby GT500
This is the most horsepower ever produced in the United States. This sports car has a peak speed of 200 MPH and can go from 0-60 MPH in 3.5 seconds.
Despite Iosef referring to the vehicle as a 1969 Ford Mustang Boss 429, John Wick's car driven by Keanu Reeves during the film is really a 1969 Ford Mustang Mach 1, dressed up like Boss 429. Clues that its more likely a Mach 1 include the chin spoiler, interior, hood pins, and hood scoop.
1970 Ford Mustang Boss 429 Fastback auctioned for $245,000.
Conservatively rated at 335 hp at 5200 rpm it's the same prime mover that pushes NHRA super stock Mustangs through the quarter in the mid-11s with speeds in the 120-mph range.
Here are the five most expensive Mustangs ever sold.
Prices tend to start at around $70,000 for a 1969 Mach 1 Mustang, and for that, you can have one that has relatively high mileage on the clock, though — generally speaking — it will have been well looked after.