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

New to Diesels

Old Apr 27, 2011 | 01:46 PM
  #1  
TheKid760's Avatar
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Hello everyone, this is my first post, hopefully I put it in the right area.

I just bought a 95 3500 DRW, Long Bed Club Cab 4x4 5spd, 4.10's. 16.5mpg mostly highway @ 60-65mph.

I bought it from a used car dealer who didnt know anything about it so I'm unsure of exactly what has been done to it but here's the mods that I can see:
-K&N intake & Banks Twin Ram, it has the WH1C turbo and it appears stock with stock wastegate (But I dont know too much about them).
-It must have a fuel plate since it can school bus in 3-5 gears up to 22250-2500 rpms or so.
-I suspect it has a 3k gsk, and maybe some pump mods or injectors, as well as adjusted wastegate. I only have a 30lb boost gauge and it pegs it easily. Pyro's at freeway cruising are at 600, but going up a 6% +/- grade flooring it, they only get up to 1000-1100.

Sorry for the long details but I'm looking for input on what you think it has for mods based off what I described, and more importantly where to go with my mods for more power & speed.
 
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Old Apr 28, 2011 | 12:28 PM
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daveO's Avatar
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Welcome! I think you're probably pretty close with the mods the truck may have. Where you should go from there is based on what you want to do with the truck. What I would definitely do is check the KDP and make sure it's done. Also might want to look into the 5th gear nut fix (no firsthand experience with that here, just from what I read).
 
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Old Apr 28, 2011 | 03:57 PM
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Dave makes a good point. those are the 1st things you check on those trucks. (from experience) after that just drive it unless you wana upgrade to more power.
 
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Old Apr 28, 2011 | 08:59 PM
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yeah definately check the kdp
 
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Old Jul 10, 2011 | 06:52 PM
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Thanks guys. I have been doing a lot of reading, there's a lot to learn.

I pulled mt star wheel plug and it was toward the front, so I cranked it a turn or two away from the engine and that seemed to help a lot with the smoke and appeared to be a little quicker.

I also Pulled the AFC, It does have a Banks Plate in it.

The waste gate appears stock, as is the exhaust so the previous owner likely only added the intake, plate, and twin ram.

I bought a new isspro boost gauge (prior one only went to 30lbs) I'm peaking right about 30-32psi under hard acceleration.

So how do I get more power without killing my MPG completely?

I'm thinking KDP, 4" turbo back straight exhaust, 3kgsk, #100 plate, boost elbow to raise boost a little (is that how I raise it?), and see how that is then go from there.

Sorry for the long post. Any input is appreciated.
 
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