How much HP can you get out of a 428 engine?
How much HP can you get out of a 428 engine?
After some break-in miles, we’d likely see 375 hp and, with headers, yes, very likely 400 ponies. The peak torque of 452.4-lb-ft at 3,700 rpm is also higher than Dearborn’s claim of 445 lb-ft at 3,400….Testing 4-2-8… How Much Horsepower Does the Ford 428 Cobra Jet Really Make?
| RPM | Torque (lb-ft) | HP |
|---|---|---|
| 5,000 | 376.5 | 358.9 |
How much horsepower can a 428 Cobra Jet have?
335 hp
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.
What is the difference between 428 CJ and 428 SCJ?
First you have to start with the 428 v.s. the 428 CJ. The CJ block differs from the plain 428 due to the additional webs cast into the main bearing saddles. The SCJ block is the same as a CJ.
How much horsepower did the Boss 429 have?
375 hp
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 is Cobra Jet engine?
The 1968 Cobra Jet was powered by a heavily modified version of Ford’s 428 big block engine. This engine was later used on the Boss 429 Mustang as well. The Cobra Jet was available in both fastback and coupe models with either a three-speed automatic or four-speed manual transmission.
What is a 428 Police Interceptor?
The 428 police interceptor engine could be found on both the 1967 Shelby GT500 and the 1968 GT500KR. Midway through the 1967 model year, the 427 was swapped out for a newer 428 Cobra Jet engine equipped with a Holley four-barrel carburetor.
Was there a 429 Cobra Jet?
In 1968, the 429 superseded the 427 as Ford’s premier big-block, replacing the heavier FE-series. 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 is a Boss 429 engine?
The Boss 429 engine featured a semi-hemispherical combustion chamber head fit over a massive 4.900-inch bore-spacing block that allowed for huge pistons and plenty of room for valves. It shared its 4.36-inch bore with the 460, but used a shorter 3.59-inch stroke.
What kind of engine does a 428 CJ have?
Though the 428 CJ and SCJ could be ordered in different Mustang trim packages, most 428 CJ and SCJ V8s were ordered with the Mach 1 Mustang model. The Mach 1 was only available with the fastback roofline. The Mach 1 had seven different performance engine options available. The 428 CJ and 428 SCJ were the Mach 1’s best performance engine options.
When was the Cobra Jet 428 replaced by the 429?
In 1970 the 428 Cobra Jet Motor was replaced with a 429 CJ engine. The change occurred in the middle of the production year so some early Cobra Jet cars had 428’s, later cars were 429’s. The 429 Cobra Jet package included: Bigger heads with larger ports and valves
What kind of car was the Boss 429?
The big-block Boss 429 V8 was produced in very low numbers and was only found on the Boss 429 Mustang which was a limited production Mustang made only to qualify the Boss 429 for NASCAR racing duty (NASCAR required at least 500 units to be sold in a 1969 production car in order for the Boss 429 V8 to be certified for the 1969 racing season).
What’s the difference between a 428 and a 427 engine?
The smaller bore of the 428 was well within normal production line capabilities. The longer stroke (3.98 vs. 3.78 for the 427) gave the engine powerful low-end punch. The 428 CJ and SCJ blocks have extra main bearing webbing and thicker main caps than the normal 390 or 428.