How Much Horsepower Does a 1987 IROC Z28 Have?

The 1987 IROC-Z, an iconic muscle car from the late 80s, offered a variety of engine options that catered to enthusiasts seeking uncompromising power. With it’s distinctive design and aggressive stance, the IROC-Z became synonymous with performance and speed. While the base model came equipped with a carbureted 305-cubic-inch (5.0-liter) small-block V8, generating a respectable 170 horsepower, there were other enticing choices for those longing for a more adrenaline-fueled experience. For those seeking enhanced performance, a fuel-injected version of the 5.0-liter engine was available, capable of producing an impressive 215 horsepower with a manual transmission or 190 horsepower with an automatic transmission. However, for the true power-hungry enthusiasts, the ultimate option was the 350-cubic-inch (5.7-liter) small-block engine, which churned out an exhilarating 225 horsepower, but exclusively with the automatic transmission.

Is a Z28 a V8?

The Z28, especially in it’s revived form, is widely known for it’s impressive V8 engine. True to it’s reputation, the revived Z28 was indeed powered by a formidable 350 cu in (5.7 L) VWith a four-barrel carburetor, this engine generated an impressive output of 185 horsepower (138 kW, 188 PS). However, it’s worth noting that the California emissions equipment slightly reduced the power to 175 horsepower (130 kW, 177 PS).

In addition to it’s immense power, the Z28 was a well-rounded package that catered to comfort and convenience as well. Most of these cars were sold with air conditioning, ensuring a pleasant driving experience even in hot climates. Furthermore, an automatic transmission was included as the standard option, adding ease and convenience to the driving experience.

The Z28s V8 engine was a true testament to the power and performance that Chevrolet sought to deliver with this iconic model. It gave the car an unmatched level of acceleration and responsiveness, making it a force to be reckoned with on the road. The combination of the V8 engine, air conditioning, and automatic transmission provided a well-balanced driving experience that appealed to a wide range of enthusiasts.

The History and Evolution of the Z28 Model

The Z28 model is a legendary car that’s a rich history and has undergone significant changes over time. It first appeared in the late 1960s as a performance package for the Chevrolet Camaro. It was designed to compete in the Trans-Am racing series and quickly gained a reputation for it’s power and handling.

Over the years, the Z28 went through various iterations, with each new generation bringing improvements and advancements. In the 1970s, due to stricter emission standards and changing consumer preferences, the Z28 saw a decline in performance. However, it made a comeback in the 1980s with a more powerful engine and improved aerodynamics.

Throughout the 1990s and early 2000s, the Z28 continued to evolve, incorporating new technologies and design elements. It became known for it’s aggressive styling, high-performance engines, and track-ready capabilities. The Z28 nameplate was temporarily discontinued in 2002 but was reintroduced in 2014 as a limited-edition model, featuring a supercharged V8 engine and advanced suspension.

Today, the Z28 remains a highly sought-after and iconic car among enthusiasts. It’s history and evolution showcase the continuous efforts of Chevrolet to push the boundaries of performance and create a thrilling driving experience.

The third-generation Camaro IROC-Z was a powerhouse on wheels, garnering much attention and acclaim. Car and Driver magazine even included it on their prestigious Ten Best list in 1985. Under the hood, the 3rd-gen Camaro IROC offered different engine options, each delivering varying levels of horsepower. The 305 c.i. 5.0-liter TPI LB9 boasted an impressive rating of 215 hp (160 kW). Meanwhile, the 4-bbl 305 LG4 provided a still respectable 155 hp, and the 4-bbl High Output 305 L69 offered an exciting 190 hp (142 kW). These powerhouses exemplified the Camaro’s commitment to exhilarating performance.

How Much Horsepower Does a 3rd-Gen Camaro IROC Have?

The third-generation Camaro IROC was indeed a powerhouse in it’s time. With it’s sleek design and powerful engine options, it became a symbol of American muscle cars in the 1980s. One of the most notable features of this iconic vehicle was it’s horsepower.

The 305 c.i. 5.0-liter TPI LB9 engine was the top performer among the available options, generating an impressive 215 horsepower (160 kW). This engine was known for it’s advanced Tuned Port Injection system, which significantly improved fuel distribution and power output.

On the lower end of the spectrum, the 4-barrel 305 LG4 engine produced a respectable 155 horsepower. While not as powerful as it’s counterparts, it still provided a thrilling driving experience.

The performance and power of the Camaro IROC-Z secured it’s place on Car and Driver magazines prestigious Ten Best list for 198This recognition was a testament to the cars exceptional performance, handling, and overall driving experience. It’s inclusion among the top vehicles of that year further solidified it’s status as an emblem of American automotive excellence.

5.0-liter TPI LB9 with it’s remarkable 215 horsepower or the slightly less powerful 305 LG4 and 305 L69 engines, the Camaro IROC offered a thrilling ride and left a lasting mark on the automotive industry. It’s inclusion on Car and Drivers Ten Best list for 1985 highlighted it’s exceptional performance, making it a beloved choice for muscle car enthusiasts.

Comparison With Other Muscle Cars of the 1980s: How Does the Camaro IROC’s Horsepower Compare to Other Popular Muscle Cars of the Same Era?

  • Camaro IROC
  • Ford Mustang GT
  • Dodge Charger
  • Pontiac Firebird
  • Chevrolet Corvette

The 1988 IROC-Z came equipped with different engine options depending on the model. The base engine for the ’88 Camaro was the 135hp 173 cid V-6, but a more powerful 170hp 305 cid V-8 could be chosen as a $400 option for the Sport Coupe. However, the IROC-Z coupes and convertibles were fitted with the 170hp V-8 as standard, now featuring fuel injection. Additionally, an optional 230hp 350 cid V-8 was available for the IROC-Z, but it could only be paired with an automatic transmission.

What Engine Did the 1988 IROC-Z Have?

In 1988, the iconic IROC-Z, a powerhouse of a car, offered enthusiasts a range of engine options to suit their driving needs. The base engine for the 88 Camaro was the 135hp 173 cid V-6, a solid choice for those seeking a balance between performance and fuel efficiency. However, for those hungry for more power, the 170hp 305 cid V-8 was a tempting $400 option with the Sport Coupe.

The IROC-Z, known for it’s aggressive styling and spirited performance, demanded an even more potent powertrain. Therefore, both the IROC-Z coupes and convertibles were fitted with the 170hp V-8 engine, now equipped with fuel injection. The fuel injection system enhanced throttle response and improved overall engine performance, allowing drivers to feel a surge of power as they hit the gas pedal.

Whether one sought a balance of power and efficiency or yearned for raw, unadulterated performance, the IROC-Zs engine choices provided ample opportunity for drivers to unleash their inner speed demons.

From the standard V-6 to the optional V-8 engines, each powertrain delivered the type of exhilaration that enthusiasts craved. Whether tearing up the open road or dominating the racetrack, the engine choices of the 88 IROC-Z ensured that it remained an unforgettable chapter in automotive history.

The 1987 Z28 is equipped with a powerful 5.0 L LG4 4-bbl V8 engine, providing it with a robust performance. This engine produces a horsepower of 145 (108 kW) and is paired with either a four-speed manual transmission or a three-speed TH200 lockup automatic transmission

What Engine Is in a 1987 Z28?

The 1987 Z28, a legendary model from Chevrolets Camaro lineup, boasted impressive power and performance. Under the hood, this iconic vehicle housed the mighty 5.0 L LG4 4-bbl V8 engine, a popular choice among enthusiasts of the time. This engine, known for it’s robustness and reliability, delivered a respectable 145 horsepower (108 kW), adding to the Z28s reputation as a formidable muscle car.

The 5.0 L LG4 4-bbl V8 engine was paired with two transmission options, giving drivers the freedom to choose according to their preferences. The first choice was a four-speed manual transmission, allowing for a hands-on and engaging driving experience. Alternatively, customers could opt for the three-speed TH200 lockup automatic transmission, which offered smooth and effortless shifting for a more relaxed ride.

The LG4 engines 4-barrel carburetor setup provided an ample amount of fuel to feed the hungry V8, resulting in a satisfying and responsive acceleration. The engines design and construction prioritized durability and longevity, ensuring that the Z28 delivered consistent performance over the miles.

Whether equipped with the four-speed manual or the three-speed automatic transmission, the Z28 offered a thrilling driving experience that left a lasting impression. The visceral roar of the V8 engine coupled with it’s impressive horsepower made the Z28 an icon of American muscle cars in the late 1980s.

Performance Modifications for the 1987 Z28 Engine

  • Install a high-performance air intake system
  • Upgrade the exhaust system for better flow
  • Install a performance chip to optimize engine performance
  • Replace the stock camshaft with a high-performance one
  • Upgrade the ignition system with performance spark plugs and wires
  • Install a larger throttle body for increased airflow
  • Upgrade the fuel injectors for better fuel delivery
  • Replace the stock headers with performance headers
  • Install a high-flow catalytic converter or remove it entirely
  • Upgrade the cooling system for better engine temperature control
  • Replace the stock rocker arms with roller rockers

The 302 cubic-inch engine, specifically designed for the first-generation Z/28 Camaro, served as it’s powerplant from 1967 to 1969.

What Engine Did the Original Z28 Have?

The original Z/28 Camaro, introduced in 1967, boasted a formidable engine known as the 302 cubic-inch powerplant. This engine was specifically developed to meet the requirements of the Sports Car Club of Americas Trans-Am racing series. Chevrolet engineers understood the importance of equipping the Z/28 with a high-performance engine that could deliver impressive power and speed.

The 302 cubic-inch engine incorporated a combination of components that contributed to it’s exceptional performance. It featured a forged steel crankshaft, forged steel connecting rods, and forged aluminum pistons. This robust construction allowed the engine to withstand the demands of racing, providing durability and reliability on the track.

This potent power, combined with the lightweight design of the Camaro, allowed for impressive acceleration and exhilarating driving experiences. The engine was paired with a robust Muncie 4-speed manual transmission, enabling precise and smooth gear changes.

The 302 cubic-inch engine was renowned for it’s rev-happy nature, with a redline of 7,000 RPM. It was known to generate an incredible sound, emitting a distinctive and aggressive growl that defined the Z/28s presence on the road. Enthusiasts and racers quickly recognized the power and prowess of this engine, solidifying it’s status as a legendary piece of automotive history.

Source: Chevrolet Camaro (fourth generation) – Wikipedia


In conclusion, the 1987 IROC-Z offered various engine options to cater to the preferences and performance needs of buyers. Whether opting for the base carbureted 305-cubic-inch V8 producing 170 horsepower or the fuel-injected version with either 215 or 190 horsepower, drivers had a range of powertrains to choose from. Ultimately, the 1987 IROC-Z proved to be a versatile and dynamic vehicle, showcasing Chevrolet's commitment to providing a thrilling driving experience.

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