[aardvarcus]

All,

I am starting this thread to discuss the aerodynamics and potential improvements for a 90's model Chevy or GMC Suburban or other SUV. The models I am discussing are the 1992 through 1999 and carryover 2000 body style also known as eight generation, gmt400, or OBS. The same years of Blazer, Tahoe, Yukon, Denali, and Escalade are also very similar and open for discussion.

There are a lot of reasons why someone would or would not choose this particular generation or type of vehicle, so let's basis our assumptions for the discussion that someone has already determined this type and generation of vehicle meets their needs the best, and is looking for ways to best improve it aerodynamically.

Several users on here have these generation vehicles, and I am in the planning stages of a fairly thorough project based on this platform. The idea for this thread is to post ideas, parts, solutions, etcetera and have a healthy discussion of the aerodynamic benefits and practicality of the proposed modifications. I will kick it off with some of my ideas I have come up with, but everyone jump in.

For starters, this generation has some aerodynamics built in from the factory. Most of the leading edges are reasonably rounded off and several of the body details appear quite optimized such as the flush door handles. Other noteworthy factory aerodynamic items include a factory air dam, optional fairly smooth hubcaps or wheel covers, and the 1999-2000 Denali models have completely redone front ends that look similar to the newer models but yet built on the old platform.