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Old 01-08-2015, 11:15 AM   #1
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Chassis Information please

For a couple of months I have been reading about super duty and f-53 Ford chassis. Mine is the super duty. My question is, what is the difference? I know the engine and transmission are different. What about the chassis?
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Old 01-08-2015, 12:01 PM   #2
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Jerry,
It makes a lot of sense to post your make model, year, & chassis in your signature. It's in your profile but it's a lot harder to respond to questions.

Your 2005 is on the 2004 F-53 chassis with the Triton V-10. I don't believe you have the 3-valve engine. I believe that was available in late 04 or 05 and for sure by 2006. But you just might have that engine. It's got more HP and torque as well as a tougher transmission.

What's the difference??? Well it matters not if there is any difference. I believe they call some of the units by the name, "Super Duty". That's just another name given to some of the truck chassis. Your coach is built on an F-53 chassis, probably 18,000 lb and unless you have some specific questions that's about sums it up.

TeJay
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Old 01-08-2015, 12:09 PM   #3
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Originally Posted by Grey Ghost I View Post
For a couple of months I have been reading about super duty and f-53 Ford chassis. Mine is the super duty. My question is, what is the difference? I know the engine and transmission are different. What about the chassis?
If your motorhome is a class A built on a Ford chassis, it's built on the F53 chassis. It's the only chassis Ford has made for Class A motorhomes since at least the early 1990's. Keeping in line with the other larger F series trucks they call it a Super Duty. A couple years ago they also introduced the F59 chassis, but it's smaller than the F53 chassis and used for delivery step vans.
Here's a link to one of the latest brochures Ford has put out on the F53 chassis. Notice it's referred to as a F-Series Super Duty Class A Motorhome Chassis.

https://www.fleet.ford.com/resources/ford/general/pdf/brochures/Class_A_brochure-2014_LoRes.pdf
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Old 01-08-2015, 12:44 PM   #4
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In the official National Seabreeze literature for 2005, National has
ford super duty with 310hp and 4 speed transmission, Ford
F-53 with 362 hp and 5 speed transmission, plus the Chevrolet workhorse 340 hp and Allison tranny. The Fords have the same GVWR so it appears there is no physical difference in the two chassis frame and related parts. Anyway, for 2005 310hp= super duty. 362hp=F-53.
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Old 01-08-2015, 01:06 PM   #5
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Originally Posted by Grey Ghost I View Post
In the official National Seabreeze literature for 2005, National has
ford super duty with 310hp and 4 speed transmission, Ford
F-53 with 362 hp and 5 speed transmission, plus the Chevrolet workhorse 340 hp and Allison tranny. The Fords have the same GVWR so it appears there is no physical difference in the two chassis frame and related parts. Anyway, for 2005 310hp= super duty. 362hp=F-53.
Are you ready for some more confusion?
Ford did not make a 2005 model year F53 chassis.According to Ford they ran the 2004 chassis until the end of February 2005 then went to the 2006 model starting March 1 2005.The 2006 model F53 chassis included the 3 valve per cylinder 362 hp version of the V10 and the R5110W 5 speed transmission with tow/haul mode.

Here's a link to the specifications pages:
https://www.fleet.ford.com/truckbbas.../techspec.html

Here's a link to the 2006 model year chassis manual:
https://www.fleet.ford.com/truckbbas...essd_06mhc.pdf

This is a note from page 2 of the 2006 body builders manual:
F53 Class A Motorhome Chassis 2005 program cancelled and redesignated to a 2006 program (Job#1 1/3/05). 2004 model will extend until the introduction of the 2006 model (Refer to 2004 Specifications for information) (TY3-ES-10009).

So if your motorhome was built on a chassis built prior to March 2005 it has the 2 valve 310 hp V10, with a 4R100 (4 speed) transmission.. If it's on a chassis built on 3/1/2005 or later it will have the 362HP 3 valve per cylinder V10 engine and the R5110W 5 speed transmission.

The easiest way to tell which you have is look at the shift lever. If the button on the end reads Tow/Haul you have the newer version. If it reads OD (overdrive) ON/OFF it's the older version
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Old 01-08-2015, 05:37 PM   #6
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I believe I alluded to the 04,05,06 engine change/switch possibilities for the OP but Hikerdogs had the specific dates for the upgrade. Thanks. I hope the OP has the 3-valve engine.

TeJay
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Old 01-08-2015, 09:14 PM   #7
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Tejay,I have the 310hp engine. I knew the 362hp was on the 2006 chassis. What confused me was National had it listed as an option. By now I probably have everyone confused. Sorry about that.
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Old 01-09-2015, 07:04 AM   #8
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After referring to the links you guys posted, I see that the simple way to tell the difference is to look at the wheels. March '05 and later with 362hp has 10 lug wheels. Older with 310hp and same size wheels has 8 lugs. Simple, huh? Thanks to all of you!!
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Old 01-09-2015, 08:30 AM   #9
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Originally Posted by Grey Ghost I View Post
After referring to the links you guys posted, I see that the simple way to tell the difference is to look at the wheels. March '05 and later with 362hp has 10 lug wheels. Older with 310hp and same size wheels has 8 lugs. Simple, huh? Thanks to all of you!!
It's also painted on the top of each spring:
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