Well, the problem is, to start with, is there are 4 different 4.6L V-8
engines that might be in your truck. Granted, one is the CNG version which
is unlikely. Two plants, one plant made two versions of the gasoline V-8.
So, no, they are not all the same. If your engine is VIN code W, it was
made at the Romeo plant, not Windsor. Silly isn't it. VIN code 6 is the
Windsor engine. There are differences in the truck vs. car engines,
different emissions, power bands, etc., so you will need a 1997 or 1998
truck engine to replace the Romeo. For the Windsor, you will need to know
if the flywheel is bolted up with 6 or 8 bolts, but also will be a 1997 or
1998 truck engine only. There were changes to the 1999 & up, the engines
were unique almost every year in one way or another with calibrations,
PI(Product Iimprovement), and so forth. The Romeo survives after 2000.
Things get really crazy with truck engines in 2002 with 7 versions of the
5.4L, and a mid-year change to the Romeo 4.6L.
The Windsor/Cleveland/Boss engines and the 335 engines were so much easier
to keep track of...
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