Performance and Accessories 2nd gen only Talk about Dodge/Cummins aftermarket products for second generation trucks here. Can include high-performance mods, or general accessories.

How not to Defuel

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Old 03-21-2005, 03:19 PM
  #16  
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[QUOTE]Originally posted by greenworks
Originally posted by paulb


On a different note, you would be better off to put a 3-4 switch, so you can get it to ship before 3200.


Paul
[/QUOte

I not sure what your trying to say?
The 3-4 shift on the 47RE is controlled by the computer. You can put in a switch that will make the trans shift when you throw the switch (actually shortly there after). It's not a TC lockup switch, but controls the 3-4 shift. I throw my switch at about 2600, and it shifts about 2800. With the drag comp it reduces the amount of de-fueling between 2700-3200, but how long the engine is at 3200 before the trans shifts varies. The switch fixes that problem.

Paul
Old 03-21-2005, 04:16 PM
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I have a 3-4 switch its called my left leg
Old 03-22-2005, 02:12 AM
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Originally posted by ratsun
Thanks Brandon, do you have a graph with the Drag comp?
That graph totally reflects whats happining to my truck of course at about 200hp less
Nope, I'm not allowed back at the indoor dyno shop (they said something about too much smoke?). The ricer shop refused since I "might break their dyno with 1300+ ft/lbs". There's a diesel shop opening near me, but it's been "a month from finished" since December. I guess they poured the wrong footer for the Mustang dyno and need to make it 12" deeper?

Originally posted by greenworks
Brandon what is the best 1/4 mile time you have run, our trucks are both 5-speeds but you have 175hp more than me, I have never run the 1/4 before but I would lkike to figure out where i would run I am guessing low 15's maybe high 14's. Can you feel the differnce with the drag comp, being the rpm is higher does it hold boost better when shifting?
I've run a slow 14.03 @103 but I've got a massive 104lb sled pulling clutch in it right now. If you still have a single disk and spool a little off the line, I'd expect you to run like you said. It all depends on if you can shift fast (I suck). I've seen a video of Jeff Prince running somewhere around 12 seconds with a 5 speed. I launch in 3rd and shift twice. The videos in my sig of Cleveland will give you a better idea of how mine with the comp runs at the track. The difference is felt most in 5th gear from 90-110. It feels like someone kicked you square in the rear. Before the drag comp you could feel the truck defuel after it hit 2700.

brandon.
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