I beleive, after just a few days of playing, i found the limit of my single walbro 307 fuel pump. I figured out how to log delivered flywheel torque into the trans, whick only works in direct with the converter locked, and can therefore calcullate horsepower from it, just like a dyno does. so, off i went. with some tuning to get things running ok, low timing, and not very stable boost pressures, i managed to get a decent log in 3rd gear. Well long story short, i am seeing a long line of 500+ hp and quite a few in the 550+ range. even had a couple over 600, with the highest of 628hp, but im not sure if that was in drive, so i wont count it.
Right now im sitting at a solid 550 crank hp, that is at about 8psi, and 5600rpm. The car starts to break up and go lean at that point, but the numbers are jumping anywhere from 30-50hp per 400 rpm increase depending on boost, when i let out of it. And my cam is good to about 6600rpm, soooo, i dont think 600whp is out of the question if i can get some more fuel in it.
Example, 8psi
RPM, 3600, 4000, 4400, 4800, 5200, 5600, 6000
HP, 394, 412, 454, 517, 543, 584, 593
That is an actual log, discredit it as you will, but i feel it is fairly accurate, as this formula has been dyno dested to be within 3-4%. Also makes perfect sense because that is all this pump is capable of, stupid 307, wish i had a 340.
Discuss, oh, and sorry about no pics, im working on it
Gary
