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-   -   Buying new v8 or v10 engine help (https://www.sportsmobileforum.com/forums/f9/buying-new-v8-or-v10-engine-help-16727.html)

Gh0ztkid21 02-16-2016 08:10 AM

Buying new v8 or v10 engine help
 
I know it's been discussed and a lot of the threads are old on the topic so I was wondering, would you do it the same?

Would you recommend the v8 or the v10? I'll be driving mostly highway and trails. I cruise at 65-70 almost always. This will be strictly for weekends and trips not a daily driver.

I just sold my 6.0l diesel looking to get a brand new v8 or v10 and I want to know opinions. I want longevity since I'm 27 years old I want something that will last years and years to come. I will be going with the e350 eb 4x4 and a simple futon bed in the rear with an open floor plan. All my gear in Various totes so I can go from fishing to camping to hunting to snowboarding all by taking one tote out and throwing a different one in. No fresh water or sink, possibly down the line a fridge but no shelving or any of that. Nice and open.

So is the difference of mpg really that much? I've read 10mpg from the v10 and then people that swear 14-15mpg on the highway cruising 65-70mph. And the v8 I have heard 15mpg and some say 12mpg cruising at 65-70.

What are you guys getting with your rigs and which would you prefer for my situation? Mostly Highway driving at 65-70mph occasional trails or city driving to get to a destination to park. Never tow anything but might down the line get a jet ski.

Any input would be a great help because all threads I've found are old and ALWAYS TALK ABOUT TOWING!!! I DONT TOW!! Lol

mikracer 02-16-2016 09:37 AM

I have a 2005 E350 RB passenger van with the V10 and Torqueshift trans. It's usually just me in the van with maybe 200lbs worth of stuff inside, so nothing that will affect gas mileage. When it was on stock tires, the best I ever got on the freeway was 12.8 going 65 mph. After I lifted it with 285/75/16 tires, I still get about the same. It's just about done getting the 4x4 installed, so on my drive back, I will calculate the mpg again to see if the extra running gear affects it at all.

I'm not sure who is getting 15+ mpg with their V10, but I just don't see how it can be done. Of course, my van came stock with 4.10 gears, so maybe if you have 3.73's, but even then, I'm not sure it can be done. People also said to go 60mph on the freeway to maximize mpg and I tried that, but I found that the minimal gains (0.1 mpg?) wasn't worth the frustrations of going so slow.

yvrr 02-16-2016 10:27 AM

Our V10 4x4 gets about 13 mph at 60 mph on a level highway based on our Scangauge. Our van weighs about 10,500 lbs which might be a factor. I've never calculated mileage for a tank of gas since it depends a lot of how much shifting is involved...while getting up to 60 mph on the freeway, the V10 sucks gas but does better than a Suburban.

I think that the V10 is better suited for a fully-equipped 4WD SMB since the engine isn't working that hard. We've got 115,000 miles on our V10 and expect to get close to 200,000 miles before we stop using it. In your case the V8 might be fine.

Gh0ztkid21 02-16-2016 10:58 AM

Thanks yeah I am concerned with the fuel mileage but I'm also looking at mph vs rpms because having the v8 traveling at such speeds might be straining the engine more which might hurt the overall life span of the engine. That's what I'm looking for. I can overlook the added fuel cost of a v10 being overkill if it's going to last longer then the v8 will. I also read that they put a better transmission in the v10 compared to the v8' transmission? i don't want to hit 200k eventually and have had replaced transmissions and multiple problems with a v8 and have the v8 on the end of its lifespan when the v10 at 200k miles still be going wrong with no transmission Issues and still going strong.

Gh0ztkid21 02-16-2016 11:18 AM

And on the same token for shits and giggles using $3/gal as a constant and the fuel mpg as best/worst scenario

V10 200k miles @ 10mpg = 20,000gal fuel @ $3gal =$60,000
V8 200k miles @ 16mpg = 12,500gal fuel @ $3/gal =$37,500

That's $22,500 cheaper over the long run if v8 gets that great gas milage and v10 gets that little.

V10 200k @ 13mpg = 15,384gal @ $3 = $46,152
V8 200k @ 15mpg = 13,333gal @ $3 = $39,999

$6,153 is a lot more reasonable and enough to go with v10 over v8 but if it's more like the other mpg then the v8 would be more reasonable.

Also not factoring in if the v8 will need more work due to straining on the engine under the 65-70-75mph driving situation. So what's your thoughts? And also any input on longevity of transmissions and such on both vehicles also any other maintenance costs that differ from one to the other would be greatly appreciated.

Thanks

carringb 02-16-2016 12:04 PM

The 6.8L is about 25% larger displacement, and under best case in town light-duty driving does seem to use about 25% more fuel than the 5.4L.

However, once you start adding a load, the difference gets smaller as it takes fuel to make power. At some point, the 6.8L will use less fuel. Since you aren't towing, you won't ever run into that.

I average about 11-12 highway with my V10, however it has a huge ass grill guard, full roof rack, is a dually, and has 4.56 gears. My dads van is all stock and has the 5.4L with 3.55 gears and averages 16-17 highway. When my van was bone stock with 3.73 gears I averaged 14-15 highway. Sure was nice back then when I could go 500 miles on a tank of fuel:)

If you aren't towing, you definitely don't need the V10. You won't ever "wear" out the V8. Either motor can easily top 500,000 miles under hard commercial service, and owners who aren't driving as hard can double that. The V10 is paired with a much more robust transmission, but if you ever did have trouble with it, it will cost more to repair than the 4-speed behind the V8.

I haven't seen any substantial difference in maintenance costs between the two, other than the extra pair of spark plugs and boots you have to buy every 100,000 miles.

pfreeman 02-16-2016 12:05 PM

I have a 2001 V10 Extended body GTRV. Its 2wd but is a pretty heavy camper build. I average 13-14MPG on most of my trips.

Gh0ztkid21 02-16-2016 01:11 PM

Thank you I appreciate the responses. I should add that eventually down the line I also plan on adding a pop top so I could change inside standing out of the elements and have the upstairs bed as well. I'm sure those don't add that much more weight but the interior walls and floor will be built out with Dynamat, insulation, ply, and vynal. Which will be adding some weight.

Ford_6L_E350 02-16-2016 03:51 PM

I have a 2012 van with a HIGH top and a 5.4L. Power has not been a problem. I get 12.5 mpg when driving 70+ and almost 14 when I keep it at 65. 4.10 gears 285/75-18 tires.

The only reason I might opt for a V10 is the transmission. The 4 speed feels really old after my experience with the Torqueshift behind my old 6.0.

Mike

Oogs 02-16-2016 07:49 PM

I have a 2013 EB50 V10 4x4 Voyager top with roof rack. It has 15k miles and I've only broken 10mpg once. Scangauge readings average 8.5 to 9.5 on the highway. Mileage sucks, but I'm digging the low gas prices right now.

Sent from my SM-T810 using Tapatalk

Gh0ztkid21 02-16-2016 07:56 PM

Nice not bad at all, whats the best gearing for the v8 and best gearing with v10 for fuel milage at cruising speeds? I have located a v8 quigley 4x4 with 3.73 gearing and 295 65r18 tires.

Gh0ztkid21 02-16-2016 07:59 PM

I'm guessing you have a v10? That's a bummer for milage. I was hoping better then that but have heard many guys say that's the average with a few here and there getting as high as 13mpg.

Quote:

Originally Posted by Oogs (Post 169509)
I have a 2013 EB50 4x4 Voyager top with roof rack. It has 15k miles and I've only broken 10mpg once. Scangauge readings average 8.5 to 9.5 on the highway. Mileage sucks, but I'm digging the low gas prices right now.

Sent from my SM-T810 using Tapatalk


jydog 02-17-2016 05:12 AM

Quote:

Originally Posted by Ford_6L_E350 (Post 169502)
I have a 2012 van with a HIGH top and a 5.4L. Power has not been a problem. I get 12.5 mpg when driving 70+ and almost 14 when I keep it at 65. 4.10 gears 285/75-18 tires.

The only reason I might opt for a V10 is the transmission. The 4 speed feels really old after my experience with the Torqueshift behind my old 6.0.

Mike


Just fyi you can get a 5R110W (TorqShift) behind a 5.4 . My box van cutaway e350 sd has one.

Gh0ztkid21 02-17-2016 05:17 AM

Interesting. I'm no mechanic by any means so would probably cost a pretty penny to do the swap but that's good to know down the line if the tranny on a v8 ever went.

jydog 02-17-2016 05:29 AM

You would probably have to swap the computer and maybe the harness also.

Jsweezy 02-17-2016 07:16 AM

First off I have never driven a v10 E350 but I did go from a 2011 F250 with the 6.7l Diesel that was deleted and tuned. The thing was a beast and I definitely loved the horsepower and 16mpg gas mileage.

With that being said I now have a 2014 E350 5.4 RB averaging 14mpg stock with tiny tires and I love the feeling of just being able to enjoy the drive and taking my time. I think these vans are great for going places and doing things and mine isn't even setup like a Sportmobile (yet) and wouldn't trade it back in for the horsepower on the truck. So my opinion is this, unless your going to tow a lot then the V8 is fine, yes its not going anywhere fast or with an amazing amount of torque but its enjoyable and has done everything I need it to do.

I am also interested and going to pursue adding the 5R110W once I get some other things knocked off my checklist.

carringb 02-17-2016 08:47 AM

Quote:

Originally Posted by jydog (Post 169528)
Just fyi you can get a 5R110W (TorqShift) behind a 5.4 . My box van cutaway e350 sd has one.

Yes, it was optional in the cutaway, but not even offered in the vans. That said.... one of those AeroCell or Turtle top fiberglass bodies is starting to look awfully tempting for a camper body:b1:

Gh0ztkid21 02-17-2016 09:18 AM

Thanks I found a 2014 5.4 v8 with 3.73 gearing and 295 65/18 tires I wonder how that would be with fuel milage, and what kind of rpm it will be while cruising at 70mph. Wonder if that setup will put any additional strain on the engine being those tires are 33" so that's a lot of added weight and drag and I'm not sure how that gearing works out for that setup. Anyone know anything about the topic?


Quote:

Originally Posted by Jsweezy (Post 169534)
First off I have never driven a v10 E350 but I did go from a 2011 F250 with the 6.7l Diesel that was deleted and tuned. The thing was a beast and I definitely loved the horsepower and 16mpg gas mileage.

With that being said I now have a 2014 E350 5.4 RB averaging 14mpg stock with tiny tires and I love the feeling of just being able to enjoy the drive and taking my time. I think these vans are great for going places and doing things and mine isn't even setup like a Sportmobile (yet) and wouldn't trade it back in for the horsepower on the truck. So my opinion is this, unless your going to tow a lot then the V8 is fine, yes its not going anywhere fast or with an amazing amount of torque but its enjoyable and has done everything I need it to do.

I am also interested and going to pursue adding the 5R110W once I get some other things knocked off my checklist.


86Scotty 02-17-2016 09:24 AM

*fuel mileage quotes read on the internet are always high. Honest people quote their mileage and the internet converts it to 20-50% higher. So far, I see two people in this thread who somehow avoided the airwave traps. One who said his 5.4 got about 12.5 at average freeway speed, which was my experience exactly, but usually only about 12. Another with a V10 who gets 8.5-9.5. Let's see what the airwaves convert my numbers to.

My 5.4 got 12
My 460 gets 10

:b5:

carringb 02-17-2016 09:41 AM

Really, total ride height (tire + suspension lift), and what's bolted the outside, have more affect than what motor it has.

3.73 gears are way too tall for 295 tires. That will require lots of torque converter work to launch from a stop, and it probably will struggle to stay in O/D on the highway, especially if it has a bumper or rack. Both of those issue will make lots of extra heat in the transmission.

rallypanam 02-17-2016 10:42 AM

I would double check those gear ratios. At least on the older ones, Quigley pretty much always used 4.10s.

Gh0ztkid21 02-17-2016 11:02 AM

the van is a 2014 e350 eb 5.4l v8 with quigley 4x4. It's got 1700 miles and is bone stock cargo van. No fancy bumpers or added weight, the back is completely bare. I don't plan to add much to it, I like the stock look of the exterior of the vans and won't add any ladder racks or roof racks or font bumper but I may down the line get a aluminess rear bumper. The interior would be finished walls and floor with a futon bed in the back that I can slide out. Simple and open. The guy said that the gearing was 3.73 with those 295 tires. I am going this weekend to test drive it and see it in person but other then pictures I don't know much about it. Any help would be great. Also I'm assuming paperwork from quigley would let me know what the gearing is. The Guy said quigley matches the stock gearing of the e350 van. I don't know much about that. Any input? Also what would be a good gearing or setup for that van? I don't really care about taking off speed I don't drive fast or drive around town much. Mostly on open road highways until I reach my destination so I'm looking at the best gearing for good gas milage and longevity of engine at 70ish mph highway speeds

rallypanam 02-17-2016 11:11 AM

Check this:
Identify Your Ford Truck Axle From The Door Sticker

Or the tag on the differential..
https://ww2.justanswer.com/uploads/mu...5_135655_2.png

Gh0ztkid21 02-17-2016 11:23 AM

Thank you for that. I'm going to have him send me a picture of the door sticker so I could look it up. Does quigley match the stock axel gearing or do they do what's needed for the tires and rims put on?

Quote:

Originally Posted by rallypanam (Post 169554)


Jsweezy 02-17-2016 11:51 AM

I wouldn't want to run 295/65r18 on my stock 3.73 5.4.

mikracer 02-17-2016 11:54 AM

If you call Quigley and give them the VIN, they can tell you exactly what they did to it, including gear ratio, axle, etc. I called them on a 1996 van that I purchased and they still had the info on it.

Gh0ztkid21 02-17-2016 12:20 PM

What gearing would be best for those tires? Or would it end up being best to just change tires if it came to that eventually?

And thank you I'll give quigley a call this afternoon and ask. That's good to know.

rallypanam 02-17-2016 12:22 PM

4.10s would be good.

ridintall 02-17-2016 12:41 PM

1 Attachment(s)
Quote:

Originally Posted by Gh0ztkid21 (Post 169512)
I'm guessing you have a v10? That's a bummer for milage. I was hoping better then that but have heard many guys say that's the average with a few here and there getting as high as 13mpg.

Yes, I updated my post. I just realized when I'm posting via Tapatalk, my handle is different.

Quote:

Originally Posted by carringb (Post 169544)
Really, total ride height (tire + suspension lift), and what's bolted the outside, have more affect than what motor it has.

A little more info to put things into perspective:

285/70/17 Goodyear DuraTrac tires
4.30 gearing (Quadvan 4x4)
Transferflow 47 gal tank
Aluminess Bumpers and roof rack.

I get the worse mileage in the summer running A/C and fishing basket up front full of firewood, 10 gals of extra water, Thule box on the roof, generator out back and fully loaded w/ fuel, water, camping gear etc. So you get the picture, my rig is tall and heavy.

I was hoping for 10mpg averages when I ordered my van but it is what it is. Now, this is my seconds SMB, I had a 2004 RB50 Quigley 6.0 PSD and rarely got over 13.5. I mostly saw 11.5-13. The only thing I've consistently gotten is lower mileage on both vans than what most people have reported. But nobody said these things were grocery getters.

Digging the cheap fuel right now, time for a road trip.:q6:

Gh0ztkid21 02-17-2016 01:09 PM

Haha I hear what your saying! My 05 6.0 quigley 4x4 285 75r16 rigged very basic with 1/2" ply walls and a futon bed slid in the back got an average of 15 mpg on most of my trips. Most highway driving then a little through town to my destination. Parked for a week/weekend then back home. My best with my rig was 16.8 mpg. I have a scangauge but it always reads off, I always reset my trip tracker on my dash and divide milage by the amount of fuel I put into the tank so it's a very accurate reading. I don't mind so much about the gas milage as I do the longevity of the engine.
But thanks for the info very informative listing everything your running to get a perfect idea of the setup and milage


Quote:

Originally Posted by ridintall (Post 169572)
Yes, I updated my post. I just realized when I'm posting via Tapatalk, my handle is different.



A little more info to put things into perspective:

285/70/17 Goodyear DuraTrac tires
4.30 gearing (Quadvan 4x4)
Transferflow 47 gal tank
Aluminess Bumpers and roof rack.

I get the worse mileage in the summer running A/C and fishing basket up front full of firewood, 10 gals of extra water, Thule box on the roof, generator out back and fully loaded w/ fuel, water, camping gear etc. So you get the picture, my rig is tall and heavy.

I was hoping for 10mpg averages when I ordered my van but it is what it is. Now, this is my seconds SMB, I had a 2004 RB50 Quigley 6.0 PSD and rarely got over 13.5. I mostly saw 11.5-13. The only thing I've consistently gotten is lower mileage on both vans than what most people have reported. But nobody said these things were grocery getters.

Digging the cheap fuel right now, time for a road trip.:q6:


Gh0ztkid21 02-17-2016 01:56 PM

So the door jam sticker says axel 34 which when I looked it up its gearing for 3.73. So I'm assuming that is the gearing left? Or would quigley change the gearing when they did the lift, bigger tires and all that? I would guess that I will have to look at the axel itself when I see it in person this weekend. Also if it is the stock 3.73 gearing with the 4" lift and the 295 65r18 tires should that gearing be changed? What would that gearing do for driving/milage/strain on the engine?

Jsweezy 02-17-2016 07:42 PM

Just took a picture for all you non-believers out there. I dont have a full loaded down Sportsmobile, just a stock 2014 E350 5.4l 3.73.

https://www.sportsmobileforum.com/att...1661a4c2a.jpeg

Oogs 02-17-2016 07:51 PM

I dream of double digit mileage numbers. But sometimes one must sacrifice a few mpg for a bitchin ride :)

Sent from my Xoom using Tapatalk

Jsweezy 02-17-2016 07:55 PM

I agree, as soon as I get more money to spend on upgrades I doubt I will see this number for long.

Gh0ztkid21 02-17-2016 08:21 PM

Is your rig 4x4 or just 2wd? And what size tires are you running? Pretty good numbers considering.

Quote:

Originally Posted by Jsweezy (Post 169610)
Just took a picture for all you non-believers out there. I dont have a full loaded down Sportsmobile, just a stock 2014 E350 5.4l 3.73.

https://www.sportsmobileforum.com/att...1661a4c2a.jpeg


Jsweezy 02-17-2016 08:39 PM

Its 2wd with some tiny 225s, I am about to swap to 275/65r16 so I am sure it will take a hit.

Gh0ztkid21 02-18-2016 05:09 AM

14 mpg 2wd with small tires so chances are slim of getting that out of the rig I was looking at 4x4 4" lift on 295/65r18

Quote:

Originally Posted by Jsweezy (Post 169615)
Its 2wd with some tiny 225s, I am about to swap to 275/65r16 so I am sure it will take a hit.


boywonder 02-18-2016 08:40 AM

I have a 2008 5.4L 4WD 285/70-17's 3.73 gearing and get about 13mpg fairly consistently......may be slightly better since my speedo reads about 7 mph slow at 65 mph.

boywonder 02-18-2016 08:49 AM

Quote:

Originally Posted by Jsweezy (Post 169610)
Just took a picture for all you non-believers out there. I dont have a full loaded down Sportsmobile, just a stock 2014 E350 5.4l 3.73.

https://www.sportsmobileforum.com/att...1661a4c2a.jpeg

I'm curious how these factory dash mpg calculators actually work. It the very old days it was a wild-ass approximation based on engine vacuum and maybe speed...........Are post OBDII-fuel injections ones accurate?

Gh0ztkid21 02-18-2016 11:14 AM

That's not bad. What mph do you usually cruise at with your setup? And how does the engine handle your cruising speeds?

Quote:

Originally Posted by boywonder (Post 169626)
I have a 2008 5.4L 4WD 285/70-17's 3.73 gearing and get about 13mpg fairly consistently......may be slightly better since my speedo reads about 7 mph slow at 65 mph.



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