The ON3 Performance 78mm Turbocharger has quickly become a proven and popular choice for the single turbo V8 market, delivering serious horsepower capability, strong airflow, and outstanding value for builders looking for reliable large-frame turbo performance.

Designed for both street and race applications, this turbocharger has shown excellent real-world results across multiple high-performance combinations. It has been successfully used in single turbo setups running deep into the 9-second range, while twin turbo applications have also proven capable of supporting aggressive power levels in even faster builds.

Built to support 800+ RWHP in properly matched applications, this turbo is an ideal choice for larger cubic-inch engines where increased airflow and reduced exhaust backpressure become critical to maintaining efficiency and top-end power.

Larger Turbine & Compressor Combination

One of the biggest strengths of this turbocharger is the combination of a 78mm compressor wheel paired with a larger 75mm turbine wheel, helping improve airflow balance and exhaust efficiency.

Many similar turbochargers in this size range rely on smaller 65mm or smaller turbine wheels, which can become restrictive in higher horsepower setups. The larger turbine design helps control backpressure, improve exhaust flow, and reduce the risk of overspeeding the turbocharger under high-boost conditions.

This also makes the 78mm an excellent upgrade for builders currently pushing the limits of the popular ON3 76mm turbocharger, especially in larger displacement or more aggressive performance combinations.

Features & Benefits:

• Large-frame 78mm turbocharger
• Supports 800+ RWHP in properly matched applications
• Excellent for single turbo V8 combinations
• Strong option for larger cubic-inch engines
• Improved airflow and reduced exhaust restriction
• Helps control backpressure in high-horsepower setups
• Larger turbine design supports stronger top-end power
• Helps reduce turbo overspeed under heavy boost
• Excellent upgrade from smaller 76mm turbocharger combinations
• Great value for street or race applications

Compressor Side Specifications

• Compressor Wheel: 78mm
• Compressor A/R: .80
• Compressor Inlet: 4.0"
• Compressor Outlet: 2.5"
• Compressor Inducer: 78mm

The ON3 Performance 78mm Turbocharger is a proven solution for builders needing high-flow performance, strong horsepower capability, reduced backpressure, and dependable reliability in serious street or race applications.