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02-18-2008, 04:05 PM
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eBay Motors
#1 (permalink)
| | Member
Join Date: Feb 2008 Location: Macon, Ga.
Posts: 38
| Qustion about fuel mileage?
I have a 2006 3500 crew cab long bed 4x4 with a six inch Fabtech lift and 35/12.50 17 pro-comp x-treme a/t tires. The motor is all stock and i get about 11-12 mpg around town and 10-11 mpg towing a 7000 lb. travel trailer. Never owned a diesel before is this normal gas mileage? Very happy with everything about the truck, even the gas mileage if this is all i can get, because it is a very large truck. | 
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02-18-2008, 04:13 PM
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eBay Motors
#2 (permalink)
| | Member
Join Date: Oct 2007 Location: Missouri
Posts: 87
| A programmer and exhuast should give a few more mpg's.The lift and larger tires dont help with the mpg but sometimes looks are worth the sacrifice.
__________________
05' GMC Crew Cab Lt
Edge juice w/ attitude
Air Raid Intake
4" MBRP straight Pipe | |
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02-18-2008, 04:19 PM
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eBay Motors
#3 (permalink)
| | Senior Member
Join Date: Jan 2008 Location: Ohio
Posts: 165
| X2 on what duromx05 said I get 17-19 mpg's.
__________________ 2003 Duramax lb7
stock/5spd Allison
Edge/attitude
Silverline Exhaust 
4 inch turboback
AFE air filter | |
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02-19-2008, 05:24 AM
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eBay Motors
#4 (permalink)
| | Duramax Forum Moderator
Join Date: Feb 2007 Location: Barnesville OH
Posts: 3,236
| with the lift and tires and still getting above 12MPG,i wouldn't complain but yes there is room for improvement.start out with a Silverline or MBRP Exahust then a PPE,ATS,Diablo,Quadzilla or EFIlive tuning and then also make sure you do gauges to keep an eye on the boost and EGT levels..also welcome to the DF.
__________________ James 
05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP. | |
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02-19-2008, 07:29 PM
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eBay Motors
#5 (permalink)
| | Senior Member
Join Date: May 2007 Location: Zolfo Springs Fl.
Posts: 155
| i run a 4" straight pipe egr blocker and finger stick on a stock 06 3500 4x4 srw and get 16-18 w/ my race trailer at about 8k pounds and 20-22 empty
__________________ 06 LBZ 3500 4x4 single rear wheel regular cab long bed WT. PPE economy, 4" turbo back straight pipe, solid gooseneck, drw wrecker prep springs, blocked, fingured, 2"plugged, and plenty of UWS boxs. work in progress  | |
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02-19-2008, 10:55 PM
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eBay Motors
#6 (permalink)
| | Super Man Moderator
Join Date: Oct 2006 Location: Irwin PA
Posts: 2,703
| Ya thats about normal for your tire size the lift doesnt hurt anything but the tires do! I killed my fuel mileage when I went from a 245-285. I was getting 15town 20 highway now 12town 15highway. I think my next tire will be a 265! 
__________________ Jason 2006 Silverado Shortbed Crew Cab LBZ Escalade handles, Line-x, Painted bumpers and towing mirrors, Tinted Front Windows & Tail lights 2 MTX 10in Subs & Punch 250amp in a custom box. Autometer Ultralite II Pyro & EGT gauges with pillar pod MBRP Turbo Back stainless exhaust (Straight piped), AFE Stage II Intake, PPE Hot+2 265/75/16 Nitto Terra Grapplers on Gear Alloy wheels Lost Kitty Reward if found!! 1999 Ford F-550 Powerstroke Tow Truck-Wrecker **Jerr-Dan Bed, S&B Intake  | 
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02-20-2008, 05:15 PM
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eBay Motors
#7 (permalink)
| | Junior Member
Join Date: Oct 2007
Posts: 1
| The lift will hurt the mpg on the highway too! The higher up the truck is the more drag there will be on it because no matter how tall your tires are, air doesn't flow under the truck very well at all. For better mpg you can also re gear your differentials to take into account your taller tires and get back to your stock final drive ratio. This won't solve all your problems either because the taller tires have more mass to get moving, and more rolling resistance once moving. If you want mpg slamm it & put skinnies on it. | |
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02-20-2008, 08:41 PM
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eBay Motors
#8 (permalink)
| | Member
Join Date: Jan 2008 Location: Clemson, SC
Posts: 96
| I am getting 13 mpg with basically the same setup- cclb 6" fabtech with 315's. Haven't ran my Edge juice/attitude long enough yet to know what to expect from it, nor have I towed much wieght yet. I was really hoping to get up to 15 mpg- maybe after exhaust and cai??? Hope so- I guess we have to remember- with this setup, these trucks are massive!! Does anyone know about how much this should wiegh?
__________________ 2006 2500 LBZ CREW CAB LONG BED
EDGE JUICE W/ ATTITUDE
315'S W/ 17" GEAR LOCKER 714C WHEELS
FABTECH 6" LIFT
BD EXHAUST MANIFOLD
S&B COLD AIR INTAKE
4" STRAIGHT PIPE EXHAUST
RESONATOR HOLE PLUGGED
1 CARSEAT IN THE BACK-  | |
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02-23-2008, 08:46 PM
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eBay Motors
#9 (permalink)
| | Senior Member
Join Date: Feb 2008 Location: bay area
Posts: 172
| Quote:
Originally Posted by BigBlue'06  I have a 2006 3500 crew cab long bed 4x4 with a six inch Fabtech lift and 35/12.50 17 pro-comp x-treme a/t tires. The motor is all stock and i get about 11-12 mpg around town and 10-11 mpg towing a 7000 lb. travel trailer. Never owned a diesel before is this normal gas mileage? Very happy with everything about the truck, even the gas mileage if this is all i can get, because it is a very large truck. | Is this hand calculated or from DIC?
__________________ '06 LBZ
17,000 miles to date
PPE hot +2 e.t (Jan 22,2008) sold on Jul 29,2008, EFILive (July 29,2008), egr block plate,pyrometer and boost gauges,Line-X bedliner, power step, matching door handles (Escalade), billet grille, clear braw to prevent rock chips, led tail lights, high intensity headlamps, two 10" subs, rockford fosgate 1000w amp for subs 5w-40 synthetic engine (Feb.17,2008), 75w-90 synthetic differentials (Feb.17, 2008), fuel additive (Feb.23, 2008) | |
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02-23-2008, 09:17 PM
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eBay Motors
#10 (permalink)
| | Member
Join Date: Feb 2008 Location: Macon, Ga.
Posts: 38
| Hand calculated using dic gallons used and trip meter.
__________________
'06 3500 Crew Cab LT
Long Bed LLY, 6 inch Fabtech
Lift, 35/12.50 17 Pro Comp Tires,
PPE CAI intake mod, AFE Pro Dry Filter,
Diablo Predator, Autometer Ultra Lite II
Pyro & Boost Gauges, Hitch Cam, Headrest
DVD System. | |
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