How much horsepower does a 1982 454 have?
The Chevrolet 454 engine, a member of the big-block V8 family, has been a staple in high-performance and heavy-duty applications for decades. If you're curious about the horsepower of the 1982 version of this iconic engine, you're not alone. In this article, we'll explore the specifications of the 1982 454 engine and provide some context about its performance capabilities.
Understanding the 1982 Chevrolet 454 Engine
The 454 engine was introduced by Chevrolet in 1970 as part of the Mark IV big-block engine series. By 1982, the 454 was primarily used in trucks and heavy-duty vehicles, as its high-performance applications in muscle cars had largely diminished due to stricter emissions regulations and the fuel crisis of the 1970s. The 1982 454 was designed more for torque and utility than outright horsepower.
Horsepower Output of the 1982 454
In 1982, the Chevrolet 454 engine produced approximately 230 to 250 horsepower, depending on the specific application and configuration. This output was significantly lower than the high-performance versions of the 454 from the early 1970s, which could exceed 450 horsepower. The reduction in power was largely due to emissions controls and the use of lower compression ratios.
Key Features of the 1982 454
Here are some notable characteristics of the 1982 454 engine:
- Displacement: 454 cubic inches (7.4 liters).
- Configuration: V8, overhead valve (OHV) design.
- Compression Ratio: Lowered to meet emissions standards, typically around 8.0:1.
- Fuel Delivery: Carbureted fuel system.
- Primary Use: Heavy-duty trucks and utility vehicles.
Why the 1982 454 Prioritized Torque Over Horsepower
By the early 1980s, the focus for the 454 engine had shifted from high-performance muscle cars to heavy-duty applications. As a result, the engine was tuned to deliver high torque at low RPMs, making it ideal for towing and hauling. While the horsepower figures may seem modest by today's standards, the 1982 454 excelled in providing the grunt needed for demanding tasks.
Conclusion
The 1982 Chevrolet 454 engine, with its 230-250 horsepower output, reflects the era's emphasis on utility and emissions compliance rather than raw performance. Despite its reduced power compared to earlier versions, the 454 remains a legendary engine known for its durability and torque. Whether you're restoring a classic truck or simply curious about automotive history, the 1982 454 is a fascinating piece of engineering.
Frequently Asked Questions
Is a 454 big block a good engine?
In its prime, the 454 was praised for its torque output, making it suitable for heavy-duty applications like towing and hauling. However, it also had a reputation for being thirsty on fuel, especially in comparison to smaller, more modern engines.
What year 454 has the most HP?
The 1970 versions of the Chevrolet 454 were the most powerful, with the LS5 putting out around 360 horsepower and the LS6 delivering about 450 horses.
How much HP can you get from a 454?
The budget 454 not only managed to exceed 500 hp, but did so in spectacular fashion with peak numbers of 565 hp at 5,900 rpm and 532 lb-ft of torque at 5,400 rpm.
What can a 454 be stroked to?
On a 454ci engine with a stock, 4.00-inch stroke, a 0.100-inch overbore delivers a 476-inch displacement, while a 0.125-inch overbore will give you a 481-inch Rat. A popular combination is the safer 0.060-inch overbore with a longer, 4.250-inch stroke to make a 496-inch combination.
How much HP does a Cammed 454 make?
The 454 responded very well to the cam upgrade, as the peak numbers jumped from 376 hp and 482 lb-ft with the stock cam to 428 hp and 507 lb-ft of torque. An increase of 52 hp is always welcome, especially when it comes with a sizable jump in peak torque.
How much horsepower does a 1983 454 have?
The 454 EFI version was rated from 230 hp (172 kW) to 255 hp (190 kW) and from 385 lb⋅ft (522 N⋅m) to 405 lb⋅ft (549 N⋅m) of torque.
How much horsepower does a 454 big-block have stock?
The 454 EFI version was rated from 230 hp (172 kW) to 255 hp (190 kW) and from 385 lb⋅ft (522 N⋅m) to 405 lb⋅ft (549 N⋅m) of torque. The 1991–1993 454SS made 255 horsepower at 4000 rpm and 405 lb-ft of torque at 2400 rpm thanks to dual 2.5" catalytic converters.
How much HP does a 1970 454 have?
Chevrolet offered two versions of the car that contained a 454 cubic inch V8 engine—the LS5 that generated 360 horsepower, and the LS6 that hit 450 horsepower.
How much HP does a 1984 454 have?
The stock power ratings on these engines are pathetic (240 hp/355 tq), ie: peanut-port, open chamber, small valve heads , low compression cast pistons (8.25-8.5:1), low lift/short duration hydraulic cam, cast iron intake, Q-jet carburetor, (4 bolt main / steel crank).
What year is a 454 big-block?
Big-Block Chevy Identification Guide
| Casting Number | Engine | Description |
|---|---|---|
| 340220 | 427T | 1968-1985, 4-bolt |
| 345014 | 454 | 1970-1986 |
| 346236 | 454 | 1975-1976, 2-bolt |
| 359070 | 454 | 1970-1990 |
