Big Chief Shares His Tuning Tips & Tricks While Going Over Data From THE CROW!

In the thrilling world of street racing, precision and data are key. Recently, Big Chief, the celebrated street racer, shared an in-depth look at his tuning process for his iconic 1970 Pontiac GTO, affectionately known as THE CROW. In a detailed and insightful tech talk, Big Chief delved into the intricacies of his recent passes on 28-inch tires, offering a treasure trove of tuning tips and tricks.

The Beast Under the Hood

Big Chief’s GTO is a marvel of engineering and power. Under the hood lies a 482 cubic inch twin-turbo Pontiac engine, crafted by Butler Performance, paired with Precision 98mm turbos. Running on methanol and controlled by a three-speed Rosler transmission, this setup is designed for raw power and speed. Big Chief’s decision to use a stiff sidewall tire stretched onto a wide wheel highlights his focus on optimizing traction and stability, crucial for high-performance street racing.

Mastering the Suspension

A significant portion of Big Chief’s tuning strategy revolves around the four-link suspension system. He explains how the suspension can be adjusted to manipulate the tire’s behavior, either making it smash down for better grip or allowing it to snap back for a different kind of traction. This ability to fine-tune the suspension is vital in street racing, where varying road conditions can drastically affect performance.

Analyzing the Data

Big Chief’s approach is heavily data-driven. Using detailed data logs, he monitors critical parameters such as RPM, driveshaft speed, and boost levels. He explains that a smooth line on the data graph indicates minimal tire spin, which is ideal for maintaining control and speed. For instance, during his first run, he noted that the launch RPM was set at 3700, with a three-step rev limiter at 4100 RPM and 5 lbs of boost. This setup was analyzed to refine subsequent runs.

Incremental Adjustments

Every pass down the street provides new data, leading to incremental adjustments. Big Chief talks about tweaking the launch RPM, boost levels, and timing. For instance, he observed that increasing the RPM at launch improved the G meter readings, indicating better traction. Adjusting tire pressure slightly from 9.3 PSI to 9.1 PSI and back to 9.2 PSI was another example of fine-tuning based on data feedback.

He also experimented with an external transmission dump valve to manage converter charge pressure, further enhancing the car’s launch and traction. This meticulous attention to detail exemplifies his commitment to achieving the perfect run.

Learning and Adapting

Big Chief’s tech talk isn’t just about sharing his successes; it’s also about learning from every run. He acknowledges that not every change leads to immediate improvement, but each provides valuable insights. For example, a slight misalignment in the four-link suspension needs addressing, but he opted to focus on other adjustments first. His willingness to experiment and adapt is a testament to his deep understanding of street racing dynamics.

Engaging with the Community

Throughout his discussion, Big Chief encourages feedback from his audience. He values the input of fellow racers and enthusiasts, understanding that collective knowledge can lead to better performance. This openness to suggestions and constructive criticism showcases his dedication to continuous improvement and community engagement.

Looking Ahead

The tech talk ends on a high note, with Big Chief expressing his plans for future adjustments and tests. He’s committed to refining THE CROW’s setup further, whether it’s tweaking the four-link suspension or fine-tuning the timing and boost for different road conditions. His relentless pursuit of perfection is what keeps him at the forefront of street racing.

In conclusion, Big Chief’s insights into the tuning of THE CROW provide a fascinating glimpse into the world of high-stakes street racing. His methodical approach, combined with a willingness to share and learn, makes him not just a competitor but a mentor to many in the racing community. As he continues to push the boundaries of performance, fans and fellow racers alike eagerly await his next innovation on the streets.