4.8is VS 4.4 sport comparison

[DINANM3]

This is more of an observation than a comparison. But i was bored and comparing stats on the 4.4 and 4.8 and noticed that the 4.4 and 4.8 have the same transmission and gear ratios for all 6 gears. But the final drive ratio on the 4.4 is 4.10to1 versus the 4.8 having a 3.91to1 final drive. Now i assume BMW did this to help the gas mileage on the 4.8 since they both achieve the same gas mileage stats. I see no other reason for giving the 4.8 that 3.91 vs the 4.10. So know i am wondering. If someone modded a 4.4 to the same hp and torque specs that the 4.8is has then technically the 4.4 will out accelerate the 4.8. And seeing that the 4.8 only has 40 more hp and 45 more lbs of torque it wouldnt be too difficult to hit those numbers. Plus i noticed that the 4.4 is 90 lbs lighter than the 4.8 giving it also another slight advantage if power were equal. As most of you know every 10lbs in weight reduction is equal to a 1 hp increase as far as acceleration goes. Meaning dropping the weight by 90lbs will have the same effect as increasing hp by 9hp.

Just one more point about the difference between a 3.91 rear diff and a 4.10 rear diff for those of you that dont think it will make a difference. Although it is not a huge difference it will definately be a noticable just from my past experience. I used to have A 540I without sport package. it came with a 2.83 rear diff gearing. Now BMW pit a 3.10 rear end in the sport package 540. So i bought a 3.10 rear diff and installed it in my 540 and 0to60 times dropped from 6.1 sec to 5.8sec. With just the diff change no other mod. It cost me 1500 dollars with labor. that is a huge difference. and i think the most bang for buck you can get on a bimmer. So know i am wondering for all you 4.8 owners out there that if you can swap the 4.4 diff into your 4.8 and it should definately help your acceleration. I wonder if it would be as easy as the swap i did in the 540. I know if i had a 4.8 i would def look into this mod.

Like i said i was bored but i think i bring up a valid point and was wondering if anyone else has thought about this and also any comments or opinions you guys have about this. Or maybe one of you has already tried this. And if not i think someone with a 4.8 should try. Like i said my 540 was a direct swap and only took 3 hours labor.