View Single Post
Old 11-30-2009, 05:33 PM   #8 (permalink)
Master EcoModder
aerohead's Avatar
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 9,745
Thanks: 14,375
Thanked 5,186 Times in 3,024 Posts

The grill block was one of the recommendations listed by Rich Taylor of GMC truck division for MPG increase with Popular Science' Sierra.
If you can find the Phil Knox aerodynamic photos album,there is a copy of the graphic showing aero mods recommended for the pickup.
  Reply With Quote
The Following User Says Thank You to aerohead For This Useful Post:
darcane (11-30-2009)