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Open Roads Forum  >  Class C Motorhomes  >  Class C

 > Power boost for Ford 450 V10

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RckyMtnVia

Colorado

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Posted: 07/28/20 11:57am Link  |  Quote  |  Print  |  Notify Moderator

We have a 2019 Jayco Precept on the Ford V10,and the GVWR is 22,00lbs. The past few weeks we have been camping in SW Colorado and traveled up and down lots of mountain passes. In the tow/haul mode, I got over most passes at 45mph and from 3,200 to 4,000rpm. The longest and steepest was Monarch pass, 11,312 ft, and I did drop to 35mph about a mile from the summit. I suppose I could have gone over 4,000 rpm but I like to take my time and not push the engine. Downhill, it would run at 3,000 to 4,000rpm in tow/haul with occasional application of the brakes. I love this engine and it may take me an extra 10 or 15 minutes do get to my destination than it would in a diesel pusher, but then I saved about $100,000 by not buying a DP. It is very quiet and comfortable in my camping space!


2019 Jayco Precept 31UL

Desert Captain

Tucson

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Posted: 07/28/20 12:06pm Link  |  Quote  |  Print  |  Notify Moderator

theoldwizard1 wrote:

The biggest complaint about the V10 is you have to use high RPM (>4000) when climbing hills. At that speed, it makes a lot of noise.


No, you don't. Again this comes down to the operator knowing how to drive a V-10 properly. I can climb at least 9 out of 10 hills {at +/- 5 mph of the speed limit} to include 6 percent grades running at 3,250 rpm which is max torque {420#}. About one long grade in 10 will require a further downshift increasing the rpm's up to 4,250 which = max HP {305}.

While this will briefly put a serious dent in your mileage rarely do such grades last for more than a few miles and then you are cruising down the backside burning zero {as in not a drop of fuel}, oh, you do use Tow Haul right? [emoticon]

Probably 90 percent of our travels are more in the 2,200 - 2,500 rpm range {which gives me 60 - 65 mph} and after 7 years I still a average 9.5 mpg like clockwork and that includes a little bit of generator time.

Keep in mind that my 2012 E-350 has GVWR of 11,500 and while I run at or near that number most of the time an E-450 will be humping an additional 3,000# {GVWR of 14,500} with the same motor and 4:56 rear end vs the 4:10 on my E-350. Yep, I love my V-10.

[emoticon]





harley-dave

ummm, where are we again..

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Posted: 07/28/20 12:07pm Link  |  Quote  |  Print  |  Notify Moderator

We've had a 5 Star Tuner in our 32' Class C for 6 years now and its been excellent. Moves the max HP slightly closer to the max torque figure and changes the transmission shifting performance to be practical. Prolongs the pulling before shifting when you have an incline and shifts again promptly after you reach the top. You still need to drive it to get the RPM up on steep climbs. I never need to exceed 4000 rpm with her. And, very unexpectedly we got a 1 to 1-1/2 mile increase in our MPG. Towing a toad or 2 harleys on a trailer we get 8-8.5 on reasonably level driving.

Dave


2005 Winnebago-Itasca Sundancer 31C
2010 Harley-Davidson Soft tail Deluxe
2014 Harley-Davidson Street Glide Special
1999 Chevrolet Tracker 4X4
SKP # 121272


camperdave

northern, California

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Posted: 07/28/20 12:23pm Link  |  Quote  |  Print  |  Notify Moderator

If you've got an older (05 or older) class C with the 4R100 (4 speed), the five star tune will make a noticeable difference in transmission performance alone. Can't say it did very much for the engine, maybe it did but definitely not huge, but the change in transmission shifting behavior was worth it in my old van (1998).

I have not modified my 04 (4R100, ~13k pounds loaded, and it does just fine out West), but I might just for the transmission performance improvement alone.


2004 Fleetwood Tioga 29v

klutchdust

Orange, California

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Posted: 07/28/20 01:08pm Link  |  Quote  |  Print  |  Notify Moderator

I follow different truck forums regarding my trucks which are the duramax diesel in my GMC and the V-10 in the motorhome. Dozens of threads on issues AFTER installing enhancement devices yet few if any on stock vehicles.
The Ford V-10 will pull that "C" up any hill that you may come across, not at the speed of your car but at the speed a 7 ton vehicle should be going. Sure the engine revs, put in ear plugs or some Led Zeppelin cranked up.
The engine will not blow up, it is designed to rev. Turn off the air so the heat doesn't build up, roll down the windows smell the pines....

ndlonedog

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Posted: 07/28/20 07:51pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for all the great answers and replies,I guess I will listen and learn how to drive my Ford. Thank you

Hank85713

Tucson, Az

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Posted: 07/28/20 08:06pm Link  |  Quote  |  Print  |  Notify Moderator

not a power boost but banks has come out with a throttle assist that helps cure the 'sponge' response on new vehicles. my v10 has a lot of dead pedal and I have sent for more info. I wrote motor home to see if they had ever tested and they claimed to know nothing about the issue. 1 Guy called and asked for more info as he has the same issue. so its not that you need a power asssit you just need to be able to control what you got when you need it. There are several others who have come up with something so give the banks site a visit.

kwplot34

home

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Posted: 07/28/20 11:50pm Link  |  Quote  |  Print  |  Notify Moderator

https://www.jegs.com/i/Nitrous+Express/744/20421-10/10002/-1?gclid=CjwKCAjwmf_4BRABEiwAGhDfScgMaTQ87F0U2fKQzzkAkM1mtoeDNYCVFVPWZ5a6IGOSI7Ja1aY_5RoChtsQAvD_BwE

Horse power at the push of a button.

Powertour

Nevada

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Posted: 07/29/20 04:24pm Link  |  Quote  |  Print  |  Notify Moderator

Run it stock or buy a different rig with a more powerful engine.

You will get there just fine in a stock V-10. Start f’ing around with things in the engine / transmission departments & the risk/reward & cost /benefit is nowhere near where it makes sense (in my book).

I tow a car behind ours all over the mountainous west & don’t feel there’s anything lacking or wrong. I try not to run it 4K rpm for long periods but it will do it. I find that keeping it in the 3k-ish range is more than adequate speed wise, while being pretty easy on the girl.

Don’t try & fix something that isn’t broke.


2015 Itasca 25b Ford E350 V10

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