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Will some one clarify if my 2011 E450 class c motor home V10 has 2 valves or 3 valves per cylinder. I thought they quit making a 2 valve in 2005 but now I have some info that E series chassis Dog House is to small for the 3 valve motor????, regards, Clare I
 

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After some reading it seems that you have a 2v.

I dont know about the 5.4 but the 4.6 2v was available until 2011 when the crown vic, grand marquis and town car were discontinued. As far as the 4.6 2v anyway it had a pretty long run. Im not as familiar with the v10 but I think the 2v was available after 05 in the f series and excursion if not more models.
 

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You may be correct going by this from RV forum ,

" 07-15-2017, 08:42 PM #10

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Join Date: Jul 2014
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The Class C, E 450 chassis will only have a 2 valve V10 engine.

The 3 valve cylinder head will not fit in the E series chassis. The engine is too wide. "
 
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