Other than paperweights, TB Spacers will gain you no power but they will gain you alot of Ribbing and ridicule from everyone else...lol.

The ONLY, and I mean ONLY use I have seen, taking one and drilling out a boss and using it as a Nitrous spray plate. That is if you don't crack it or break it when you're trying to drill it out........like I did...lol.

 

I think they help(ed) on old TBI trucks.

 

I had 4 tb spacers on my 03, and I had to take them off because the truck was too fast, I couldn't handle it....

 

That's true, they help in TBI applications, but don't do jack for the LS motors.

Tom