C8 Corvette Z06 5.5L Eventuri Carbon Intake System

Description

C8 Z06 CORVETTE Eventuri Intake System

ETA Late August 2025

Peak Performance Gain : 19whp, 18ft-lb
Mid-Range Performance Gain : 42whp, 44ft-lb

The C8 Z06 Eventuri intake represents a significant advancement in intake design, setting a new standard for performance and innovation within this platform. By re-imagining the intake without the confines of the OEM trunk panel, we’ve created a solution that not only maximizes intake size but also showcases the carbon intake with a clear Polycarbonate panel when the trunk is open.

The OEM Z06 airbox, derived from the LT3 Stingray airbox, carries over the limitations inherent in its design, including its constrained shape and volume due to the space restrictions behind the OEM trunk panel. As a result, these limitations become more pronounced when applied to the higher-powered LT6 engine.

Our solution addresses these constraints by increasing the overall volume in an organically shaped system and utilising our patented Venturi housing concept to provide a more efficient and less restrictive airflow path. In doing so, we unleash a significant increase in power and torque across the entire RPM range, with a transformative improvement in the mid-range performance

Available for both Coupe and HTC.

DYNO TESTING

Our C8 Z06 Intake was developed in conjunction with Corvette specialists, Paragon Performance in Iowa who carried out performance testing and data logging for each prototype that we produced. All dyno tests were carried out in their controlled dyno cell facility where ambient temperatures were kept constant and fuel trim values logged. All other variables were minimised for a reliable and repeatable result. A fully stock Z06 was tested with engine temperatures at a stabilized value and then the car was left on the dyno while the intake was installed. After installation the car was allowed to reach the same temperatures and then run on the dyno several times for a consistent result.

As can be seen, there is a significant gain throughout the RPM range, and in particular in the mid-range between 3500-5500rpm where the intake released gains of up to 42whp and 44ft-lb or torque. This is immediately apparent on the road where the Z06 feels much more responsive and the “flat spot” which owners notice on the stock car completely disappears. Importantly it is the total gain across the entire RPM range which our intake releases that transforms the driving experience of the Z06.

DEVELOPMENT

The final result as seen above was the culmination of an iterative process where prototypes were tested by Paragon Performance and then the design was tweaked to improve on the performance gains. The graphs below show the results of each prototype leading up to the final version.

CFD ANALYSIS

CFD flow analysis was conducted on the intake to optimise the shape for smooth flow and therefore reduced drag. The simulation below shows a sweeping cut plot of velocities through the intake. The streamlines demonstrate how the intake takes turbulent flow upstream of the filters and shapes the flow to be smooth and linear as it collects and moves through the MAF tube sections to the throttle body. The velocity increases as it moves through the MAF tube yet remains laminar and uniform throughout the tube to the engine. This analysis is showing the results for one of the prototypes, which was then improved for the final version.