03 or 04 3.42's - Dodge Cummins Diesel Forum

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		Dodge Cummins Diesel Forum > 3rd Gen. Dodge Cummins 03-07 Common Rail Forums > 3rd Gen. Powertrain
03 or 04 3.42's

3rd Gen. Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

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06-17-2008, 05:59 PM	#1 (permalink)
therayone Cummins Fan Join Date: May 2008 Location: Dodge City, ks Posts: 38 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Score: 0 reviews therayone's Truck Pics	03 or 04 3.42's Is there anybody with an 03 or early 04 with the HO motor that has switched to 3.42 gears. If so what kind of change in mileage did you yield. Right know I have 4.10 gears and get about 16-17 on the highway

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06-18-2008, 12:04 AM	#2 (permalink)
JacktheBear3 FTE DIESEL Join Date: Mar 2007 Location: Northeast, Ohio Posts: 5,977 Thanks: 239 Thanked 193 Times in 143 Posts iTrader Score: 6 reviews JacktheBear3's Truck Pics	I have been told by local customers 1-3 MPG __________________ Floor It CP3 MOD's & PPE Dual Fueler Kits 6.7 Race / Delete Pipes and Sims in stock NOW AVAILABLE- 8" x 5" Adaptor Plates.... NO Reduced 8" Stack !!! Read Here

06-18-2008, 04:45 PM	#3 (permalink)
*lakelife79* Diesel Head Join Date: Jan 2007 Location: Austin/Cat Spring TX Posts: 1,205 Thanks: 19 Thanked 25 Times in 21 Posts iTrader Score: 0 reviews lakelife79's Truck Pics	I would get the 3:73's if you pull trailers on a regular basis and it should get you close to 20mpg. If you dont pull alot of trailers then go with the 3:42's. I get close to 20mpg with my 3:73's. What your getting now isn't bad though. __________________ 07 3500 DRW Mega Laramie, S300 over S400 (New top turbo in the works), BD Intercooler, Goerend Tranny with Billet Flexplate & Shafts, Smarty, FASS 150/150, C2 Gauges, BD 120's, Arson III, Coolant Bypass, T&C Diesel Modded Rail, Hamilton Cam, Pushrods, Springs, and ARP Studs. Dyno 2/21/09 - 676hp 1445tq - old setup

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