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Old Feb 21, 2008 | 08:52 PM
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Ruckus46Gt's Avatar
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Just trying to figure out where is the issue with spraying a pt4000. Does it blow through bad when you launch on spray or throughout the run. I dont mind getting a pt4000 and spraying from 2nd gear on
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Old Feb 21, 2008 | 09:25 PM
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Gilbert@Ace Racing's Avatar
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Well... without any details about your powertrain combination there really is no way to predict what might happen. How much N2O are we talking about?

But, I can generalize. The 4,000 rpm stall converter is pretty dang loose for a street application. Lot's of guys run them, but I can tell you that we have removed our fair share of them as well. Some guys find them to be too much for the street. Some guys love them.
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Old Feb 21, 2008 | 09:35 PM
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The SS4000 would be a better choice for spray since it is significantly tighter than the PT4000. I believe the issue is the shift extension with spray. My PT4400 has a shift extension of ~5800 shifting at 6500. The PT4000 wouldn't be too far off from that. Add spray and it's not such a great combo. There have been reported issues with blowing through as well. I know some people have done it, but most, including Yank, don't recommend it. I chose the PT series because I knew I wouldn't be spraying my car.
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Old Feb 21, 2008 | 09:58 PM
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100 shot we would be talking about, looking to add it when i do my heads and cam. Also 3.73 gears
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Old Feb 21, 2008 | 10:27 PM
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On spray, you don't wanna get too loose on the stall.
On a 150 shot, I'm running a tight 35-3600 stall w/a 4.10 gear rolling on MT325/50 drag radials. See video below in my sig.
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