tater',
Check out this thread.
I may have posted the incorrect one last night, as our tracs are closer to the 4.8
than the 5.7/8.3 litre V-8 Chevys (airbox configuration, etc...).
I have done this mod on all of the Chevys that I have owned, (that I could do this
to, anyway!).
The only thing else that I have to suggest, is do not cut out the back of the
airbox, closest to the engine, as this site shows. That is only going to pull in
more hot air from the engine compartment. Do the front cut-out only, silencer
removal, and the K@N Filter upgrade. You WILL notice an improvement in off-
throttle response, all the way to full-throttle accelleration.
It is not going to give you 50+ horsepower, but I do think you will feel a difference!
And I like the fact that it will give you that "Old School 4-Barrel Roar" without
any of the whistling or whining sound that some people are worried about!