How much horsepower can you get out of a 428 Cobra Jet?
How much horsepower can you get out of a 428 Cobra Jet?
335 horsepower
The Cobra Jet was a high-performance version of Ford’s 428 big-block and it was so laughably underrated that even the NHRA ignored Ford’s numbers. The engine was rated by Ford at 335 horsepower, but the NHRA gave it a 390-horsepower rating.
How much horsepower does a 1969 428 Cobra Jet have?
Engine Basics
| Year | 1969 “Q” Code (Cobra Jet) |
|---|---|
| Power (hp) | 335 hp @ 5,400 RPM |
| Torque (lb/ft) | 440 hp @ 3,400 RPM |
| Compression | 10.6:1 |
| Displacement | 428 cu / 7.0 liters |
What is a 428 Police Interceptor engine?
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.
What is a Super Cobra Jet engine?
The 429 Cobra Jet was a V8 engine offered by Ford Motor Company in the early 1970s that was a performance version of its regular 429 engine. The 429 Super Cobra Jet was available in 1971 with a very short production life (one year).
How can you tell a 428 Police Interceptor?
How to Identify a Ford 428 Engine
- Examine the cylinder head of the engine.
- Look at the cylinder’s bolt pattern.
- Measure the intake valve diameter.
- Look for extra main-bearing webbing.
- Examine the crankshaft.
- Look for the reinforcement plate for the horn bolts behind the radiator core support.
How much horsepower does a 428 Police Interceptor have?
In original factory trim the 428 Cobra Jet was capable of well over 400 hp at 5,600 rpm however Ford claimed just 335 hp to keep insurance companies happy – a number of other theories for this power understatement have been floated over the years, including the fact it allowed the car to qualify for lower power classes …
How do I know if my Cobra is a 428?
Another way to tell if it might be a 428 is to remove one spark plug, take a stick or dowel and measure the stroke of the piston, it should be 3.980″, a 390,406, or 427 will have a 3.780″ stroke and a 330,352,or 360 will have a 3.500″ stroke.
What is a Ford 428 Cobra Jet?
The 428 Cobra Jet was a V8 engine produced by the Ford Motor Company. This engine was based on the 428 FE engine, but the Cobra Jet was designed and intended for the performance market. This engine was primarily created and used for National Hot Rod Association (NHRA) races.
What kind of Cam does a Ford 428 CJ have?
The cam originally used in all 428 CJ and SCJ engines was serviced using Ford part number C6OZ-6250-B. This is a hydraulic, flat-tappet cam with a 15-tooth distributor gear that was also used in 1966-1968 390 GT engines.
What kind of crankshaft does a Cobra Jet have?
The Cobra Jet engine uses an externally balanced crankshaft with nodular iron construction. This engine also used heavier connecting rods when compared to the street version of the 428, which also required a thicker rod bolt of 13/32″. The 428 Cobra Jet was definitely a strong engine with great performance.
How many cubic inches is a 428cc engine?
As you probably gathered from the name, this engine has a displacement volume of 428 cubic inches, or 7.0 L for those more familiar with that terminology. This engine has a bore of 4.13 inches to go along with a stroke of 3.984 inches.