How much horsepower does a 1969 428 have?
The 1969 Ford Mustang with the 428 cubic inch (7.0 liter) engine was a true powerhouse, delivering an impressive 335 horsepower. This high-performance V8 engine was a force to be reckoned with, providing the Mustang with exceptional acceleration and top-end speed.
Unveiling the 428 Cobra Jet
The 428 Cobra Jet engine was introduced in 1968 as an option for the Ford Mustang. It was a high-performance variant of the 428 cubic inch V8, featuring a larger carburetor, revised camshaft, and other enhancements to boost power output. In 1969, the 428 Cobra Jet became a popular choice for Mustang enthusiasts seeking maximum performance from their pony car.
Horsepower and Torque Specifications
The 1969 Ford Mustang with the 428 Cobra Jet engine produced an impressive 335 horsepower at 5,600 rpm and 440 lb-ft of torque at 3,400 rpm. This level of power was achieved through a combination of a large displacement engine, high-flow cylinder heads, and a performance-oriented camshaft.
Factors Influencing Horsepower
The horsepower of an engine is determined by several key factors, including:
- Displacement: The 428 cubic inch (7.0 liter) engine had a larger displacement than the standard 289 and 302 cubic inch V8 engines, allowing it to produce more power.
- Compression Ratio: The 428 Cobra Jet engine had a higher compression ratio, which increased the efficiency of the combustion process and contributed to its high horsepower output.
- Cylinder Head Design: The 428 Cobra Jet featured high-flow cylinder heads that allowed for better airflow, further enhancing the engine's power potential.
- Camshaft Profile: The performance-oriented camshaft in the 428 Cobra Jet engine optimized valve timing and duration, resulting in increased horsepower and torque.
These engineering advancements, combined with the large displacement of the 428 engine, made the 1969 Ford Mustang with the Cobra Jet a true performance icon.
The Legacy of the 428 Cobra Jet
The 428 Cobra Jet engine left a lasting impact on the automotive world, cementing the Mustang's reputation as a high-performance muscle car. Its combination of power, torque, and driving excitement made it a favorite among enthusiasts and a formidable competitor on the drag strip. The 428 Cobra Jet's legacy continues to be celebrated by Ford enthusiasts and car collectors alike, solidifying its place in automotive history.
What is the difference between a 428 and a 429?
The 429 was Ford's state-of-the-art replacement for the FE-based 428, a design that had been around since 1958. Debuting as a passenger-car engine in '68, the 429 had a skirtless block, like the small-block 289s and 302s, and canted-valve heads, similar to the 351 Cleveland, for improved breathing.
What was the fastest Pontiac in 1969?
The 1969 Pontiac GTO was very fast and proved to be a great option at the drag strip capable of running from 0 to 60 mph. In 5.8 seconds. While able to achieve the standing quarter mile in 14.
How much hp does a 1969 427 have?
Of course, the 427 was the most brutish Corvette of all. For 1969 it was offered with 390 and 400 horsepower, plus a 435-horsepower version for less civilized types. The last produced its peak power at 5,800 rpm, and the stump-pulling 460 pound-feet of torque hit its stride at 4,000 rpm.
How much horsepower does a 1969 Pontiac 428 have?
The 428's extra displacement brought extra power, with 360- and 376-hp variants in 1967 supplanted by 375- and 390-hp variants for 1968 and '69.
What is the true horsepower of a 429 Cobra Jet?
With a 4.36-inch bore and shorter 3.59-inch stroke than the 460, the 429-cu-in Cobra Jet promised at least 370 hp thanks to its snappy 11.3:1 compression ratio, and it became the go-to power plant for the late-'60s Fords.
What's the difference between a 428 Cobra Jet and a 428 super Cobra Jet?
The basic strength of the Super Cobra Jet engine is in a more durable reciprocating assembly (crank, rods, pistons, wrist pins, flywheel/flexplate, and harmonic balancer) that was designed to withstand the higher RPM requirements of drag racing.
How much horsepower can you get out of a 428 engine?
22Though some claim the 428 CJ actually made in excess of 400 hp, we observed 365.1 hp at 4,800 rpm, almost 10 percent more than advertised. After some break-in miles, we'd likely see 375 hp and, with headers, yes, very likely 400 ponies.
How much horsepower does a 1969 428 Super Cobra Jet have?
The third high-power option was the more iconic Cobra Jet. Boasting a 428-cubic-inch (7.0-liter) displacement, it delivered 335 horsepower thanks to a four-barrel carburetor.
How much horsepower does a 428 stock have?
The 428's were rated for about 335hp. If you dyno a near factory 428 today, you'll see about 375-385hp. The 427's were rated for 425 hp, but I'd say they were a little under-rated as well. so 428 less power more torque and a little less temperamental , 427 more hp at the top end .
What is the actual hp of a 428 Cobra Jet?
Output was around 410 horsepower, but Ford rated it at 335 horsepower in an effort to calm insurance agents and con dragstrip rules-makers.
