For enthusiasts looking to enhance the performance of their 04 Gto, considering modifications like camshaft upgrades is a significant step. When contemplating performance enhancements for your 04 GTO, mileage is a crucial factor in determining the scope of necessary upgrades. If you are already planning modifications and tuning for your 04 GTO, addressing the camshaft and valve springs concurrently is a prudent decision. For automatic transmission 04 GTO models, incorporating a converter upgrade at the same time is also highly recommended to maximize the benefits of these engine modifications.
The mileage accumulated on the engine of your 04 GTO directly influences recommendations for supplementary upgrades alongside a camshaft swap. Components such as the timing set, oil pump, pushrods, and trunion upgrade are worth considering for replacement during the same service interval, although their absolute necessity depends on the engine’s wear and tear. These preventative measures can ensure the longevity and reliability of your 04 GTO‘s engine, especially when increasing performance.
Selecting the right camshaft for your 04 GTO requires careful consideration of your long-term performance objectives. Are you envisioning forced induction with a supercharger or turbocharger in the future, or do you prefer to maintain a naturally aspirated setup, or perhaps explore nitrous oxide injection later on? Centrifugal superchargers are generally more forgiving in terms of camshaft selection compared to other types of power adders. Interestingly, naturally aspirated (NA) camshafts can perform surprisingly well with centrifugal superchargers, particularly those without excessive valve overlap. If you initially opt for long tube headers for your 04 GTO and later decide to pursue a turbocharger setup, these headers can typically be sold or repurposed. Therefore, prioritize your long-term goals when choosing a camshaft for your 04 GTO to avoid redundant modifications and ensure optimal performance. Once the camshaft and exhaust upgrades are complete, along with a professional tune tailored to your 04 GTO, you can then focus on refining the suspension system to handle the increased power output before delving into forced induction or other significant power adders – at which point, the real excitement truly begins.
Recently, while street testing with 275/50/15 ET Street R tires, my 04 GTO experienced a traction issue near the top of second gear around 80 mph, necessitating a brief pedal lift. This resulted in a slightly early shift to third gear at approximately 6500 rpm instead of the usual 7000 rpm at wide open throttle. Data logs indicated a throttle reduction to 72% before reapplying full throttle upon engaging third gear. The car exhibited significant lateral movement, crossing the center line and then drifting towards the right edge of the lane, all occurring above 70 mph before corrective action was taken. However, once in third gear, the 04 GTO accelerated powerfully without further incident. These are indeed exhilarating experiences that highlight the potential of a well-modified 04 GTO.
