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12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

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I have a bone stock rusty 96 cummins that i want to turn up alittle but i dont want to ruin my automatic transmission what would you guys suggest just turn the fuel up alittle... JOIN NOW TO REMOVE TRACER

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  #1  
Old 12-10-2012, 09:27 PM
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Default how much can i turn up my 12 valve

I have a bone stock rusty 96 cummins that i want to turn up alittle but i dont want to ruin my automatic transmission what would you guys suggest just turn the fuel up alittle
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Old 12-10-2012, 09:40 PM
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I'm having my share of problems with the standard tranny holding up (~300 HP),

I guess you should post a bit more info about how you use the truck, and someone with auto tranny experience can help... If you don't use your truck for towing, you can probably put a bit more power down, maybe just slide the stock fuel plate forward would wake it up a little bit without just ripping things to shreds.

I'll let an auto tranny person have the last say though

Rx7man's Sig:'94 dodge SC DRW, New engine with Stg 3 cam, ported heads, 60mm HX35, BD brake, guages, timing, BHAF, 60HP injectors, #10 plate full forward, 3K GSK.
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Old 12-10-2012, 09:46 PM
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I drive the truck every day to work i dont tow alot but i do haul hay 2 5x5 round bales at a time and large loads of fire wood in the box frequently
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Old 12-10-2012, 09:50 PM
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I would *guess* that if you manually over-rode the upshift so it's not at full throttle during a shift would help the tranny cope with the added power... Also a good tranny oil cooler is essential even without power upgrades
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Old 12-11-2012, 09:18 AM
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My brother just traded his 95 dodge cummins with an auto. He ran it for a good while with someone upgrades without known problems. He slid the fuel plate all the way forward and noticed a good chunk of difference in throttle response, but it does hurt your mpg's a bit. He also took out the turbo silencer ring. There is no difference in power whatsoever, but you will notice a WAY better sound. I suggest you get a straight piped exhaust before doing any of this. Good luck to you!!!

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Old 12-11-2012, 10:35 AM
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Does broken off count as strait i have the four inch pipe waiting to go on her i just want alittle more power 185 hp isnt cutting it any idea how much power sliding that plate makes 250 hp would be plenty but i dont know if the overdrive auto trany can handle it
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Old 12-11-2012, 12:12 PM
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I think your ***-dyno would already be pleased with just sliding the plate forward... a 3K governor spring kit would do the rest, and that wouldn't jump the torque up too much for the tranny, just prevent it from starting to defuel at 2200
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Old 12-14-2012, 10:13 AM
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If you slide it all the way forward, I think it should give you around 70 horses. That should get you to your goal. I would suggest a better intake setup and an afe air filter. Although the plate helped, it felt like it had trouble catching enough air with the factory setup.
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Old 12-14-2012, 10:19 AM
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I've been talking it over with the auto guys around here...

Seems it's the low end grunt that blows up the trannys...

I'm not familiar enough with these automatic trannys but if that's true, just yank the plate and set your AFC full forward but crank the starwheel towards the cab for a slower spool up

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  #10  
Old 12-15-2012, 11:27 AM
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