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Dodge 440-3/440 heads - RV vs.standard

7K views 2 replies 3 participants last post by  palmercomputes 
#1 ·
It's time for my 1978 Dodge 440-3 motorhome heads to be rebuilt. The only difference I know of is the coolant passages. RV heads have a "figure 8" shape, while the standard has a circular shape. I don't want to use the heads off my RV because of several stripped header thread holes and a broken "ear" or valve cover screw hole. I pulled the heads off a same year 1-ton van that has the same casting number,"452's". Can I use these? Besides the coolant passages, are they the same? Is the different passages enough reason NOT to use them?
 
#3 ·
440-3 heads

hedman sells headers for the 440 but then says will not fit the 440-3 motor.
so does anybody know what the diffrence is?
must be exhaust port sizes? header bolt pattern?
just don't know and I'm looking for headers to work on my 440-3 motor it is in a 1974 dodge motorhome that i'm adding some performanc stuff to to get more power for comfort and later for towing
 
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