How much HP are my 540s?
#21
Platinum Member
Platinum Member
Like it was said, too many variables, but sure sounds like a nice parts list. Callies cranks, carrillo rods, Dart heads, jesel, tall deck blocks, etc etc. I can see those engines with a roots 10-71 making 900+ with maybe 7-8lbs of boost.
Don't know jack about Vortech blowers, but sure looks like they are overdriven just a little! 750HP should be easy on low boost mode with that setup.
Don't know jack about Vortech blowers, but sure looks like they are overdriven just a little! 750HP should be easy on low boost mode with that setup.
#23
Registered
They are overdriven even more than you think, the internal gear box steps them UP even higher, not sure what ratio Vortech uses but on my Baja I am running Procharger M-3s, the lower crank pulley is about 7.750, the blower pulley is 3.70 and the internal gear box is 4.44-1 UP,the blower on mine turns just about 10 times faster than the motor, at 6000 rpm's the blower is turning 56000 when I do the rough math, Smitty
I asume that your are about maxed out with that unit? I would love to see that boat in action!!!!!
#24
Platinum Member
Platinum Member
I exploded a head unit once a few years ago too so they are NOT indestructable but seem to hold up decent even wicked up!
#25
Registered
Thread Starter
Ok, so I still dont know the answer, but bit of an update:
-Turning 17 3/4 31P 4 blade props
Took her out on the weekend and GPS'd 80 MPH at 4300 RPM with 13 ppl on board and a FULL (600 litres) tank of fuel! Still had a lot more throttle and more trim too!
-Turning 17 3/4 31P 4 blade props
Took her out on the weekend and GPS'd 80 MPH at 4300 RPM with 13 ppl on board and a FULL (600 litres) tank of fuel! Still had a lot more throttle and more trim too!