How do I make the truck loud???

[streetstar]

Originally Posted by Wasted Income

That might work on a 96-98 Vortec, but there are quite a few LSx Vortecs out there that straight RUN.

I should know, I've tuned a lot of them in my area, including my own

???? Are you talking about the thread starter and his '70 GMC?, or his z-71 arch enemies?

A late model Z-71 is a fine truck for running 17's, maybe mid-16's at best. A 96-98 would be slower - 17's - 18's.

The high school parking lot in Whiteville , NC probably is not a hotbed for performance oriented owners that put a real tune on them. Just jack it up (preferably a body lift) as high as dad's credit card will allow, cut the cat off and run megaphone exhaust tips straight out the back.

A modest power adder would serve well -- although a higher capacity fuel pump would be needed to keep it from leaning out too much