4.6 heads Windsor/Romeo interchangeable ? - FordTough.ca - Home of Canadian Ford Truck Enthusiasts
 
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post #1 of 7 (permalink) Old 09-13-2008, 04:04 PM Thread Starter
 
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4.6 heads Windsor/Romeo interchangeable ?

Does anyone know if you can interchange WEP, and REP heads, using the proper valve covers and intake manifolds ?

Ford Motorsports offer reasonably priced performance improvement heads for the 4.6, but only list them for the romeo factory built engines, and not the more commonly found Canadian windsor built motor (here in Canada).

My 4.6 needs head gaskets, and possibly a head, and I was considering getting a couple of these as replacements, rather than having mine machined, or replaced with used.


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post #2 of 7 (permalink) Old 09-13-2008, 06:30 PM
 
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Yes there are there interchangeable but you will need a new set of valve covers Windsor and Romeo use different ones

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post #3 of 7 (permalink) Old 09-15-2008, 12:47 AM
 
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if you are changing to the PI heads i believe you will need a new intake as well, not 100% sure though, maybe someone else will know
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post #4 of 7 (permalink) Old 09-15-2008, 12:51 AM
 
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Quote:
Originally Posted by fullyford View Post
if you are changing to the PI heads i believe you will need a new intake as well, not 100% sure though, maybe someone else will know
Thats correct

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post #5 of 7 (permalink) Old 09-15-2008, 02:41 AM Thread Starter
 
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Cool,

Thanks for all the replies, and help !
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post #6 of 7 (permalink) Old 09-17-2008, 06:20 PM
 
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i might be changing over my self, pi heads intake and a new cam, possibly even a stroker kit, we'll see how that goes though
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post #7 of 7 (permalink) Old 09-25-2008, 01:27 PM
 
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Putting those PI heads on your non-PI motor stock bottom end will yield approximately 10.3 to 1 compression. You will need to start running 91 octane (at least) and you will need to get it tuned but you will gain power. You can rule out forced induction with that compression.

Also, the non-PI truck intake can be used on PI heads. The ports don't line up perfectly and you will need to use some RTV on the water jackets. Not the best way to do it but it works.

Also, the timing cover bolts on the windsor heads are larger than the timing cover bolts on the romeo heads. This means that you will need new bolts, and worst case scenario a new timing cover, i don't know for sure because there are like 20 variations of timing covers for the 4.6.
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