ROUSH CleanTech’s Generation 5 Godzilla Engine is the next advancement in powertrain technology, delivering more power in a compact package.

The Ford 7.3L Roush Godzilla Engine engine is produced at high volumes — more than 600 engines per day. That’s six times the competition!

Available in Ford commercial vehicles
(F-450/F-550; F-650/F-750; F-53/F-59; E-350 cutaway; and E-450 DRW cutaway), Micro Bird G5 Type A buses and Blue Bird Vision Type C buses. *Also available with gasoline fuel system in school buses.

The innovative propane autogas technology integrates Ford's new 7.3L V8 engine in Class 3-7 chassis. The Gen 5 engine is: 

  • Compact and more powerful
  • Easier to maintain with more room to perform service work
  • Higher in peak horsepower.
  • Equipped with technical innovations including stronger and lighter forged fuel rails, refinements to belt and accessory drive and streamlined fuel system routing and integration.
  • 70% cleaner than federal emissions standards. 
    Warrantied with unlimited mile powertrain.
  • Backed by 45 years of Roush engineering and over 1 billion miles of alternative fuel experience.
Roush Godzilla Engine

Roush Godzilla Engine has REDUCED EMISSIONS

ROUSH CleanTech vehicles are 70% lower than California Air Resources
Board and Environmental Protection Agency federal emission standards.

Roush Godzilla Engine
Roush Godzilla Engine
Roush Godzilla Propane Testing


Roush Godzilla Propane Specifications