[GMLOAD]

now i havent seen an LS1 thottle body, but the thottle body on the trucks have a little half moon thing when the valve is at 100% that restricts the flow quite a bit.

I drilled the rivets out and removed this piece and then filled in the holes where the rivets would be.

and i can feel a decent power increase at 100% throttle,

i dunno if the ls1 has this little piece but i bet if you remove it you can get a good increase in power


just a thought

 

[DevilYellow]

I have never seen anything like that on the F body or Y body TB's

 

[mistermike]

I recall seeing an insert for the stock TB. It changes the profile and supposedly improves the airflow characteristics. Anyone remember who makes it?

 

[DevilYellow]

Tbyrne sells it ..... I dont think the power results have been proven. I wouldnt even mess with the TB unless you upgrade the intake manifold. Handporting the TB is cheap and will help a tiny bit.