Quote: I don't think the converter is all that far off with the gear. Maybe a few hundred, but certainly not 1000.
You have to remember that if it only stalled 3500 or so under boost, that would have to be down around 2000rpm without boost. It would never spool the turbo at the line.
With the low gear needs it to flash up to near the peak torque to use it up to make the car move.
I'm not so sure the 2.76 gear is killing it all that much. It's not spinning the tires yet, so it'll take more torque (ie. boost). And if it spins with more boost, then the 3.23 gear was only gonna make it spin anyway. Plus it doesn't really want to pull much more then 5500 anyway. Already crossing the stripe at 5200~5300. A little more HP/MPH and it'll be right where it wants to be.
BTW... there is no way that it's going in the 9's at 123mph. Maybe 10.80's if it continues to hook as I turn up the RPM/Boost on the launch. It will definately go in the low 10's with the boost turned up some more though. No doubt about that.
I am actually moving to my new house in a week and a half, so I was lucky my wife was nice enough to let me run it yesterday... lol Maybe after the move towards the end of October I'll get it out again.
Feel free to PM me with any questions.
Amazing what a little boost will do isn't it?
I punched your numbers into a Wallace calculator and if I did it right, came up with 20% converter slippage. That's why I think you might have about a 1000 rpm too much converter. Just seems to me crossing at 5300 is barely off a 4700 converter.
If your combo starts making boost at say 2500-2700 then it should be making more than enough steam to get rolling if you put it against the converter on the trans brake at 3500-3700 rpm. I would think that peak torque would be in that neighborhood.
How much would trap speed increase if you increased converter efficiency by 15% and it still crossed the stripe at 5300?
