Gary, I didn’t try a 102 on my engine. Based on my MAP readings, it likely would have picked up a little, but I’m not really sure how much.
I think for a large CI, high reving engine like what I had, and what you have, it’s probably a good option.
Pete have you tried a 102mm throttle body Vs the 90mm for power gains? I ask because I have a peek speed shop radical ported oem LS7 manifold and was thinking about sending it back to have it opened up for a 102 throttle I have a ls3 429 stroker that put down 600rwhp with the 90mm at 6700 hydraulic roller cam.