Build a custom twin-turbo Chevrolet big-block setup with this broad T4 kit. It combines the main turbo, exhaust, intercooler, oiling, cooling, and supporting components into one package for experienced builders and fabricators.
Listed engine applications
- 396ci
- 427ci
- 454ci
- 502ci
- 572ci
Core components
- 2 × T4 turbochargers with 4-inch inlets, 2.5-inch outlets, and 1/8-inch NPT oil inlets
- 2 × TIG-welded 321 stainless-steel turbo manifolds with 2.25-inch primary tubing
- Front-mount aluminum intercooler
- 2.5-inch aluminum intercooler piping, silicone couplers, and stainless clamps
- Manual boost controller kit
- 2 × turbo oiling kits with feed and return hardware
Additional included hardware
- 2 × stainless DIY downpipe kits with 2.5-inch mandrel-bent piping and O2 sensor bungs
- T4-to-3-inch adapters and 3-inch-to-4-inch adapters
- Blow-off valve kit
- Fuel-pressure regulator, gauge, filter, and installation hardware
- Oil catch can kit
- Battery relocation kit
- Slim reversible cooling fan with mounting tabs
- Electronic turbo timer
- 50-foot heat-wrap roll
- 38mm aluminum coolant-sensor adapter with clamps
Installation note
This is a builder-oriented kit. Fabrication, component positioning, tuning, and supporting modifications may be required. Confirm engine compatibility, available clearance, and all connection sizes before ordering. Professional installation and tuning are recommended.