Actually a 48mm flows about 630cfm. Our ported 52mm throttle bodies flow about 770-775 with a shaped airfoil.
Apparently there is alot more interest in this than what I thought. I may have to look into these 3.4 throttle bodies since i've already ruled out the 3.8 ones. I have seen them on Grand Am and as long as the bolt holes are the only thing different, I might cut one of em up

-Shannon

 

I like cheese.....

 

actually its not just the bolt holes..the whole armature is on the wrong side. if our cars had throttle cables like the LS1 itd be just fine..but they dont..the 3.4 is like the 2.8 - the throttle is on the drivers side...on the 3x00 since its all turned around, the throttle is on the other side, which when turned front-back is on the passenger side.

heres a look again:
http://camaro.adwire.com/enginepics/thcable.sm.jpg

that pic was taken with me standing next to the passenger side fender, hood off of the car and sitting on the ground (hadn't quite finished putting engine back in and buttoned up. - was playing with fabbing some stuff like those little brackets that the t-cable attaches to so that it doesnt move.)

anyway. if you want more info bout the 3x00 tb's, my email/aim name is in the profile. feel free to contact.

-R