There are a few graphs I have on my PC that I'd like to post for some discussion. They refer to three basic types of modification: NA 3.8 conversion, centrifugal superchaged 3.2, and the "Selcuk" modified intake/ throttle body (I hope Selcuk won't mind, but since he has done such interesting work in this regard, I thought it appropriate).
The graphs speak for themselves, and while of course, other variables such as exhaust modifications will apply in the case of some graphs, there is clearly a surprising similarity in the gains achieved in each case. If you look at the power figures at 3000, 4000, 5000, 6000, in each case, you'll see what I mean.
Comments, corrections, recriminations and abuse, all welcomed.