LS3/7 Gold blade TB
The Gold blade TB throttle body as a shape that better allows air to enter at part throttle and WOT. The way the ramp in the housing sits, allows no obstruction like the old silver blades had. The Silver blade has ramps on both sides. while both of these throttle bodies are 90MM the gold blade does the job more efficently and if you look at any calibration file you will notice a 5% over all increase in effective area.
The wiring is also the exact same, so refrence the sticky if you need the pinouts
These can be had brand new for cheap on amazon 134.00 bucks shipped
Here are Comparison Pics
The two together

The LS2

The LS3/7

Although I understand there would be (little to) no power benefit but it would result in a very snappy throttle response.
Big benefit on LS2/6/1 mani swaps I'd imagine!
I will likely go the LS3 route if I do another one or have to replace mine.





