Mustang Evolution Forum banner

romeo vs windsor engines

13K views 9 replies 5 participants last post by  Roguestang 
#1 ·
From what I read. Windsor motors are basically truck engines lol Made at a truck plant and Romeo Are made at the car plant.
Mustangs from 99-00 have the Windsor, However Mustangs into 2001
could also have the Windsor since the Romeo plant was shut down for a while.
Apparently a supercharged Windsor can make more power with boost than a Romeo when stock.
The Rods of the Windsor has floating pins vs romeo's press fit
Windsors have an 8 bolt flywheel. Romeos have a 6 bolt flywheel. Windsors have 13 bolt valve covers. Romeos have 11 bolt valve covers.
The cam gears are attached differently as do the cam caps. The heads from a Windsor are interchangeable with those of a Romeo.

There are some more changes but those are the main ones..
not sure what to think about it haha
 
#2 ·
Having experienced both a Romeo and a Windsor 2V, I can say a PI Windsor is much better than a non-PI Romeo :thumb:

For real though, there's not really a difference in performance. People say that if you use a non-PI romeo block with Windsor PI heads you'll make more power due to a bump in compression. However if you plan to boost you might not want that.

Personally, my biggest gripe with the Windsor engine is the pressed camshaft gears. It makes doing a cam job much more complicated.

Also some people claim the Windsor is "beefier" or more robust, being from the truck plant. Im not positive on what led them to that assumption, but I doubt anyone will ever notice the difference. When it comes down to it, the bottom end is the weak point on both engines and that's what people are gonna notice
 
#4 ·
Yeah from everything I have been reading, seems like the Windsor was the better motor.. both have there differences but apparently they are better built and make better compression..
I always knew about the romeo and Windsor but never thought to look into the differences.
 
#5 ·
I've swapped windsor and romeo parts quite a bit. They are all pretty much interchangeable (in reference to the 2v and 4v 4.6 and even 5.4). But like mentioned earlier, the weak part is the rods and pistons on both....
 
#6 ·
They're identical power wise, anyone who tells you different is an idiot. There are many differences but when it comes down to it they are both PI engines. I've got a 99 Windsor in a 98 GT with FRPP Romeo PI heads, brand new FRPP intake, and the NPI accessory setup. Should tell you something.

You get the bump in compression from ANY PI heads on a NPI shortblock btw. Its one reason the PI swap cars are a little more powerful than the straight PI cars or ones like mine that had a whole PI motor dropped in and not just the HCI done.
 
#9 ·
He's probably thinking of the plastic crossovers on the windsor engines and also the 4 thread spark plug holes.

The PI intake crossover issue is well known and ANY PI intake will eventually warp and leak under the tstat housing regardless of whether it is a metal crossover or not. The metal ones do hold up better though. The 4 thread spark plug holes are common to ALL the PI engines until the 2004 revision.

Other than that its just "gotchas" like the 8 bolt cast crank, the different timing covers, cam sprockets etc...

---------- Post added at 10:50 AM ---------- Previous post was at 10:49 AM ----------



All the C heads have this cooling issue.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top