413 Max Wedge Horsepower and Torque Factory Ratings
There were two different horsepower and torque ratings for the 413 Max Wedge (1962) depending on the compression ratio of the engine.
The 413 Max Wedge engine with 11.0:1 compression ratio has the following horsepower and torque:
- 410 horsepower @ 5,200 rpm.
- 460 ft. lbs. of torque @ 4,400 rpm.
The 413 Max Wedge engine with 13.5:1 compression ratio has the following horsepower and torque:
- 420 horsepower @ 5,200 rpm.
- 470 ft. lbs. of torque @ 4,400 rpm.
| Year | Max Wedge (11.0:1 Compression Ratio) Ramcharger 413 & Superstock 413 | Max Wedge (13.5:1 Compression Ratio) Ramcharger 413 & Super Stock 413 |
| 1962 | 410 H.P. @ 5,200 rpm 460 ft. lbs @ 4,400 rpm | 420 H.P. @ 5,200 rpm 470 ft. lbs @ 4,400 rpm |
Plymouth and Dodge had their own versions of the 413 Maximum Performance Wedge (nicknamed Max Wedge) engines.
Plymouth called theirs Super Stock 413 and Dodge called it Ramcharger 413. They were the same engines, except for the labeling and had the same horsepower, torque and other specifications.
413 Max Wedge Horsepower and Torque
Two different compression ratios were available on the 413 Max Wedge engine, 11.0:1 and 13.5:1.
The 11.0:1 ratio, 410 horsepower, was the standard compression ratio. The 13.5:1 ratio (420 horsepower) was available as an option.
Other than the two different compression ratios, both engines were identical. The bump in compression was good for a 10 horsepower increase.
The increase in compression was also good for a 10 foot-pound of torque increase.
413 Max Wedge Real Horsepower and Torque
As we already know with other Mopar and muscle car engines, the power ratings were kept lower than actual.
There are a few myths why they did this.
- Car insurance premiums.
- Competitive race class qualifications, especially for the NHRA.
The 413 Max Wedge was probably no exception. The 413 Max Wedge was engineered to rev way more than 5,200 rpm. Therefore, you may ask why they rated the horsepower at that specific rpm and not more? The answer is to report a lower horsepower number.
I’m sure a dyno measure past 5,200 rpm would see an increase in horsepower more than 410 or 420.
Some people have reported factory engines were placed onto the dyno without the carburetors or timing set at the best possible tune, limiting the power output.
Unfortunately, as of this time, I can’t produce any horsepower results from a bone stock, real 413 Max Wedge engine.
Read more Mopar horsepower articles:
- 440 Six Pack Horsepower and Torque
- 426 Hemi Horsepower and Torque
- Mopar 440 Horsepower and Torque: Standard & HP Engines
If you have any questions about the 413 Max Wedge, send us an email found specifically on our contact page.
About 38 years ago I assembled my first Mopar engine. It’s at that time my hands on experience with Mopar engines, including the Max Wedge, started. Although my research of the engines started years earlier.
More Max Wedge Engine Articles
413 Max Wedge Engine Specifications
How Fast a 1962 413 Max Wedge Really Was
413 Max Wedge Engine Compression Ratios
The Max RPM for a 413 Max Wedge Engine (Redline)
Article Resources
- Dodge and Plymouth Engine Service Manuals
- Chrysler Service Bulletins (1962-1964)
- Dodge and Plymouth Data Books (1962-1964)
- Google Books: Chrysler Engines 1922-1998
