The Chevrolet Iroc-Z, a performance-oriented variant of the third-generation Camaro, remains a coveted classic among car enthusiasts. Knowing which model years offer the best blend of performance, reliability, and collectibility is crucial for potential buyers. This guide provides a detailed overview of the Iroc-Z's production run, highlighting the best years and pitfalls to avoid.
Iroc-Z Model Year Comparison Table
| Model Year | Key Features & Highlights | Potential Issues & Considerations |
|---|---|---|
| 1985 | First year of the Iroc-Z, Tuned Port Injection (TPI) 305 V8 optional, distinctive five-spoke wheels, upgraded suspension. | Early TPI systems can be prone to issues, potential for rust in certain climates. |
| 1986 | Revised taillights, optional 350 TPI V8 (very rare), minor interior changes. | Same as 1985, 350 TPI cars command a premium. |
| 1987 | Introduction of hydraulic roller camshafts in the 305, 350 TPI V8 more readily available, improved braking system. | Still prone to rust, 350 TPI cars are desirable but require careful inspection. |
| 1988 | No significant changes, continued availability of the 350 TPI. | Rust remains a concern, check for modifications. |
| 1989 | Last year for the Iroc-Z designation, minor cosmetic updates, continued 350 TPI availability. | Last year of production means fewer examples available, rust is still a concern. |
| 1990 | Iroc-Z designation dropped, Camaro remained in production until 2002. | Not applicable to Iroc-Z models. |
Detailed Explanations
1985: First Year of the Iroc-Z
The 1985 Iroc-Z marked the beginning of a new era for the Camaro. It was introduced as an option package on the Z28, featuring a unique body kit, lowered suspension, and distinctive five-spoke aluminum wheels. The standard engine was a 305 cubic inch (5.0L) V8 with Tuned Port Injection (TPI), offering improved performance compared to the carburetor engines of previous years. This year is significant as it represents the genesis of the Iroc-Z legacy.
1986: Revised Taillights and Optional 350 TPI V8
The 1986 model saw minor cosmetic changes, including revised taillights. The most notable addition was the optional 350 cubic inch (5.7L) TPI V8. However, this engine was extremely rare in 1986, making these cars highly sought after by collectors. The 350 TPI offered a significant performance boost over the 305, making it a desirable option.
1987: Hydraulic Roller Camshafts and Improved Braking
The 1987 Iroc-Z brought several improvements. The 305 engine received hydraulic roller camshafts, enhancing durability and performance. The 350 TPI V8 became more readily available, making it easier to find a car with this engine option. Additionally, the braking system was upgraded, improving stopping power.
1988: No Significant Changes
The 1988 Iroc-Z saw no major changes from the previous year. The 350 TPI V8 remained an available option, and the car continued to offer a blend of performance and style. While not as significant as other years in terms of updates, the 1988 model is still a solid choice for Iroc-Z enthusiasts.
1989: Last Year for the Iroc-Z Designation
The 1989 model year marked the end of the Iroc-Z designation. While the Camaro continued in production until 2002, the Iroc-Z name was dropped. The 1989 model offered minor cosmetic updates and continued availability of the 350 TPI V8. As the last year of the Iroc-Z, these models hold a special place in Camaro history.
1990: Iroc-Z Designation Dropped
In 1990, the Iroc-Z designation was discontinued. The Camaro continued to be produced, but without the Iroc-Z package. This year is important to note as it signifies the end of the Iroc-Z era.
Early TPI Systems Can Be Prone to Issues
The Tuned Port Injection (TPI) system, while an advancement over carburetors, could experience issues in the early years. Common problems included fuel injector failures, vacuum leaks, and sensor malfunctions. Regular maintenance and careful inspection are essential for ensuring the TPI system functions correctly.
Potential for Rust in Certain Climates
Like many cars of its era, the Iroc-Z is susceptible to rust, especially in regions with harsh winters or coastal climates. Common areas for rust include the lower body panels, floorboards, and frame rails. Thoroughly inspect any potential Iroc-Z for rust before purchasing.
350 TPI Cars Command a Premium
Iroc-Z models equipped with the 350 cubic inch (5.7L) TPI V8 are highly sought after and command a premium price. The 350 TPI offered significantly more power than the 305, making these cars more desirable for performance enthusiasts. However, be prepared to pay a higher price for a well-maintained 350 TPI Iroc-Z.
Rust Remains a Concern
Regardless of the model year, rust remains a significant concern for Iroc-Z buyers. Regular inspections and preventive measures, such as washing and waxing, can help minimize rust damage.
Check for Modifications
Many Iroc-Zs have been modified over the years. While some modifications can enhance performance, others may compromise reliability or originality. Carefully inspect any potential Iroc-Z for modifications and ensure they have been done properly.
Frequently Asked Questions
What is the best year for the Iroc-Z?
The 1987-1989 models are generally considered the best due to the availability of the 350 TPI engine and improved features.
Is the 350 TPI engine worth the extra cost?
Yes, the 350 TPI engine offers a significant performance increase over the 305, making it a worthwhile upgrade for enthusiasts.
How can I tell if an Iroc-Z is original?
Check the VIN and option codes to verify that the car is a genuine Iroc-Z and that the engine and other components are original.
What are the most common problems with Iroc-Zs?
Common problems include rust, TPI system issues, and wear and tear on suspension components.
Are Iroc-Zs a good investment?
Well-maintained, original Iroc-Zs are appreciating in value, making them a potentially good investment for car enthusiasts.
Conclusion
The Chevrolet Iroc-Z represents a significant chapter in American muscle car history. While the 1987-1989 models with the 350 TPI engine are generally considered the most desirable, any well-maintained Iroc-Z can be a rewarding classic car to own. Always prioritize a thorough inspection for rust and mechanical issues before making a purchase.