This fall General Motors Corp. says it will offer an all-aluminum Vortec 5.3L V-8 engine as an option on its ’03 Chevrolet Trailblazer EXT and GMC Envoy XL long-wheelbase midsize SUVs due to hit the market in the spring. Although no official ratings are in, GM says the new all-aluminum V-8 will make more than 280 hp and 320 lb.-ft. (434 Nm) of torque. Currently both models have the Vortec 4.2L inline 6-cyl. as their standard engine, which produces 270 hp and 275 lb.-ft. (373 Nm) of torque. ...

Premium Content (PAID Subscription Required)

"GM to Offer Optional All-Aluminum V-8 on Extended SUVs" is part of the paid WardsAuto Premium content. You must log in with Premium credentials in order to access this article. Premium paid subscribers also gain access to:

  All of WardsAuto's reliable, in-depth industry reporting and analysis
  Hundreds of downloadable data tables including:
  •   Global sales and production data by country
  •   U.S. model-line inventory data
  •   Engine and equipment installation rates
  •   WardsAuto's North America Plant by Platform forecast
  •   Product Cycle chart
  •   Interrelationships among major OEMs
  •   Medium- and heavy-duty truck volumes
   •  Historical data and much more!

For pricing and subscription information please contact
Lisa Williamson by email: or phone: (248) 799-2642

Current subscribers, please login or CLICK for support information.

Already registered? here.