EFR7670 .83 A/R T3 Turbo

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EFR7670 .83 A/R T3 Turbo

Engineered for early spool and a healthy 64lb/min compressor flow , EFR 7670 is ideal for road racing and time attack applications, as well as responsive street driven vehicles. BW utilizes their 70mm Gamma-Ti turbine wheel as the optimal match for the 57.2mm inducer / 76mm exducer FMW compressor with unmatched response. This turbo uses the mid-size EFR ported-shroud compressor housing, great for fitment in cramped engine bays. Ideal for use in single turbo applications for the 400-600hp range (up to 2.8L), or as twin turbo applications 800-1200+hp. Ceramic Ball Bearing only, watercooling recommended. 

Compressor Specifications 

  • Compressor Type: Forged-Milled Wheel (FMW) Extended Tip 
  • Compressor Wheel OD (exducer): 76mm 
  • Compressor Wheel Inducer: 57.2mm 
  • Max Flow Rate: 64 lb/min 
  • Built-in BOV: All EFR compressor housings incorporate an integrated BOV. 
  • Compressor Housing Connections: Inlet: 3.5" Hose Coupler Outlet: 2.0" Hose Coupler

Turbine Specifications 

  • Turbine Type: Low Inertia Gamma-Ti Turbine Wheel 
  • Turbine Wheel OD: 70mm 
  • Stainless Steel Investment cast Housing.  
  • 0.83 A/R T3 Single Scroll (Internal WG)- Part # 179351
  • Turbine outlet: GT-Vband (aka small 3" vband) ~92mm OD for all EFR turbos


  • Dual Row Ceramic Ball Bearings - lowest friction and fastest spool/response, most extreme durability, built-in oil control orifice - (aka oil restrictor) **no restrictor can be used with EFR turbos 
  • Watercooled Center Section - watercooling is recommended, 14mm banjo bolts 
  • Double seals on both turbine and compressor end for extreme durability and resistance to any oil seepage 
  • Boost Control Solenoid Valve 
  • Integrated to Compressor Housing Integrated Speed Sensor mounting provisions
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