Fuel Economy

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U-LUZE

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Hey Guys....

About to pull the trigger on a 2016 Ram 1500 crew with the 5.7 and 3.92 gears. I am looking at having it lifted 6" with 35s on it right from the dealer. Any idea what the MPGs would be with this set up with the 8 speed? I know ..... I'm not buying the truck for fuel economy. I currently have a Procharged Jeep SRT so I'm used to great fuel economy. :) Anyway, just curious what I might be getting into with this set up?
 

LifeSTRONG

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I have a 4.7 with 3.55 6 speed 6 inch lift with 35 mids. If I'm not on highway I range about 15 to 16 mpg. So having 3.92 with hemi I'd say you would slightly get better mpg. I'm sure someone will chime in soon with your exact setup.


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U-LUZE

U-LUZE

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Thanks! What about on the highway? I understand the MPGs on my SRT being it's a 600whp monster. I just wouldn't want to be worse in this set up. In town with my Jeep I'm like 13.5 combined.
 

chipmaker

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I have that truck minus the 6" lift. I get 15mpg consistently with mixed driving for over 10k miles.
 
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U-LUZE

U-LUZE

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Thank you for the feedback. I get about 13.5 mixed in the Grand Cherokee. Do you know roughly what you're getting on the highway?
 

CUtigerfan

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I had 3.55s on my truck and I'll go ahead and tell you pushing 35s sucked. It's hard to explain but the truck lost a lot of its get up and go. Maybe it was sensing the load of the tires but it was hit or miss on whether or not it would downshift when you got on it. So I would say 3.92s are a must. I was only getting 12.5 hand calculated with mixed driving. I ended up getting a Vararam intake and Moes 87mm ported throttle body with a Diablosport intune and had a hemifever tune written. Night and day difference and I picked up 2mpg. May not be a ton but of difference but with the added drivability the mileage was an added bonus.
 

Kid's HEMI! !!

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Diablo is the answer . My 14 5.7 35s 7"lift and 3.21 gear getting the same or better then stock now getting about 20 mpg at 80
 

6.7CumminsDrvr

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13ish around town
16ish all hwy ( I drive around 80ish), just sniffed 17 this weekend cruising to the coast

Check Fuelly, I log every tank..........
 
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U-LUZE

U-LUZE

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I have the Trinity already, just need to pay Diablo to unmarry it. I'll need to get a new PCM though, correct?
 
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U-LUZE

U-LUZE

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Was just quoted $5,899 for a 4" lift with wheels and tires from the stealership I'm looking to buy the truck at. Seems high to me? I was quoted $5,950 for a 4" BDS, wheels/tires/ and painted bushwacker flares from an area custom truck shop (probably one of the same ones they use).
 

Csanders1992

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Was just quoted $5,899 for a 4" lift with wheels and tires from the stealership I'm looking to buy the truck at. Seems high to me? I was quoted $5,950 for a 4" BDS, wheels/tires/ and painted bushwacker flares from an area custom truck shop (probably one of the same ones they use).



If that's installed prices that's not out of line really. Wheels and tires will run 2-2.5k or higher depending what you get. 4" BDS is almost 2k. Than factor in install. Which at dealership cost will be expensive.


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U-LUZE

U-LUZE

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Agree. I was just saying the shop that they will most likely take it to to get this done (they outsource it) said $5,000 for the BDS, wheels, and tires. The dealership told me they can get me a "deal" since they do so much business with them. But they came back for the same thing at $5,899. So basically, paying them $899 to be the middle man. Getting a decent deal on the truck though, it's a 2016 Big Horn MSRP of $47,090 for $32,500 so I can't complain on the truck deal. I'll probably just buy the truck and do the lift on my own through the shop. I think $5,000 is fair for the setup.
 

bri6679

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Thanks! What about on the highway? I understand the MPGs on my SRT being it's a 600whp monster. I just wouldn't want to be worse in this set up. In town with my Jeep I'm like 13.5 combined.
I just have slightly larger tires then stock 305 55-20 all terrains I get 21 miles per gallon on the highway combined like 12 -13 takes a lot of juice to get that big sucker Rollin the tires aren't like 22 pounds heavier each then the stock tires and I only lost about half a mile per gallon on the highway

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Csanders1992

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Agree. I was just saying the shop that they will most likely take it to to get this done (they outsource it) said $5,000 for the BDS, wheels, and tires. The dealership told me they can get me a "deal" since they do so much business with them. But they came back for the same thing at $5,899. So basically, paying them $899 to be the middle man. Getting a decent deal on the truck though, it's a 2016 Big Horn MSRP of $47,090 for $32,500 so I can't complain on the truck deal. I'll probably just buy the truck and do the lift on my own through the shop. I think $5,000 is fair for the setup.



Just an FYI, my truck is pretty much identical, assuming yours is 4x4. Big horn crew hemi/8spd/3.92 and I have a leveling kit with 35s and get about 15 mpg mixed.


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mselph544

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15 laramie CC short box 4x4, 6" lift with 22/37s. 3.21 gears. Truck gets 15-16 highway running 70
 

AustinB

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Here's what to "expect" to see as your "average".

Stock, 18-19mpg
Level/35s, 15-16mpg
6"/35s, 12-13mpg

Also note. I have not adjusted my speedo for the 35s.. it shows ~3mph slower than what my actual speed is, which mostly everyone says will throw off your mpg numbers, meaning they're inaccurate.

I have hand calculated 3-4 times to see what I'm actually getting. It was always the same number displayed on the dash.
 
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U-LUZE

U-LUZE

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Thanks, guys. I appreciate all the feedback. It sounds like I'd be around the same boat as I'm in now. I get 15-16 mpg on the highway in my SRT and around 13 combined if I don't reset my avg economy.

If I do the trade, I am leaning toward the 4" lift with 35s. I want there to be a glimmer of hope to fit in my garage. I have about 83" max space. My wife has a '11 Durango and there is about 15.5" of room from the top of her car (not including the roof rack) to the bottom "flap" of the garage door.
 

6.7CumminsDrvr

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It will fit in the garage, mine does!
 

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Csanders1992

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Here's what to "expect" to see as your "average".

Stock, 18-19mpg
Level/35s, 15-16mpg
6"/35s, 12-13mpg

Also note. I have not adjusted my speedo for the 35s.. it shows ~3mph slower than what my actual speed is, which mostly everyone says will throw off your mpg numbers, meaning they're inaccurate.

I have hand calculated 3-4 times to see what I'm actually getting. It was always the same number displayed on the dash.



Agreed. Even hand calculating is inaccurate. Your actually traveling further than the truck thinks you are. Doing some quick math you could easily account for the difference though


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