Quote:
Originally Posted by darcane
In '03, the Silverado changed it's front sheetmetal, but the Tahoe and Suburban retained it for a few more years. I'd look for a lower bumper fascia and air dam off an '05-'06 Tahoe or 'Burb since those had the largest air dam. '05-'06 also had the e-fans. Those two mods were supposed to be about a 1mpg bump over the '04 model. Note that the fans aren't quite plug-n-play. You need a tuner to modify your CPU to switch the fans on and off and a wiring harness (I had planned to use Black Bear Performance :: Custom Tuning Solutions for 96 and newer GM Vehicles).
That 4.8L is a great motor, I've got one in my wife's 2wd Tahoe that we can get 25mpg hwy with, and I had one in my old Silverado. You may get some ideas from the thread in my signature for the Silverado. |
I read through the post in your signature and I was just wondering how much improvements did the behind the grill block give you vs the in front grill block?