Maybe I'm missunderstanding you. :frown: Hey-I just noticed that halfway through you added >B&M stage 3 shift kit< to your discription, did you just put this in?
If not is this -3 kit setup for automatic shifts???? Or do you have to shift it.
But even then, :frown: if I understand what your saying, if the rpm doesn't go any higher in first- the fact is unless your rpm is being limited by a rev limiter gone wild, or your timing is way way out, there is more load on the fuel system as the rpms come up, it can rev to 11,000 in neutral- it doesn't matter, it is under way more load at full throttle in gear as the rpm raises- no more fuel=
no more revving. If it was springs it would have to be absolutely terrible in neutral too, not at all common. If it is a rev limiter it will still limit it in neutral. If the trans is slipping in first it will slip at a dead stop too.
If your foot is to the floor in an automatic shifting car the transmission will not shift until the set shift rpm, so if the motor is limited to 4500 and the shift speed is 4700 then the trans won't shift until you let the pedal up.
If your tv cable is set all the way in, it may want to shift later if it is setup for automatic shifts. But it still shouldn't shift at 4000-4500 until you lift the pedal. Did you try a stall test? It is possible the trans is slipping, but if it is first gear like I understood, then a stall test should confirm this. If a stall test gives you the right results (your trans doesn't rev to more than the stall speed by 700 or 2000 or more rpm (3500-4800)then you need to check the engine. It should be simple to hook up a fuel pressure guage:
if there is no fitting to connect to then you could cut the line and put a tee in. I think the factory pressure is minimum 33 psi for injected cars, although I think I heard guys saying they like 43 or even 50 plus pounds. But if it's as bad as you've experienced, it may be 5, 10, 20, or 0? You won't know until you do 3 tests what is going on.
1. Stall test in first gear.:biggrin:
2. Rev test in neutral.:tongue:
3. Fuel pressure test while flooring it at a stall test and then while driving it and flooring it in first, and don't push it hard if you already see the pressure is too low.:frown:
4. Do 1,2 and 3.
If you don't test it, you won't fix it. Good luck man, you could bring it to the shop here and I'll test it for free if your in the area.
Thank you, Larry Johnson
Westshore Transmissions Ltd.
1081 Dunford Ave.
Victoria, BC V9B 2S4
(866)459-7070 or (250)478-7070
ASE and ATRA Certified Journeyman Transmission Tech
Victoria Transmission Repair
"Where Quality is Automatic and Good Service is Standard”
that was just a guess at the problem-my advise was to do a stall test to check the trans. To prove what the problem is you have to actually try driving it with a pressure guage like I mentioned in my advise above when I was up at 3:30 this morning- 
you don't want to push it that hard without knowing the pressure. Did you manage to check anything else like the timing, you'll never know if pressure is the problem until someone hooks up a guage, if you don't want to do it yourself you should find a shop or a friend to hook up that guage for the next time you drive it.
