4.6 Rodeo or 4.6 Windsor?

[reaperstang]

As everyone can see I own a 2003 v6 Mustang.

I have been shopping around trying to consider what I want to do with my car. Since it was my first Mustang I am going to keep it and motor swap it. I was looking online and have found salvage yards with the 4.6 liter engines for a little over a thousand dollars. However I know if I bought one of those I would want to rebuild it anyways with forged internals so I could put a Supercharger on it.

Then I began looking for 4.6 liter blocks and came across two versions. One of the Romeo and the other is the Windsor. So my question is... what is the difference and what were each of them used in?

Once I pick out a block what sequence of parts should I look into buying and installing? I have a few friends who can help me but it's 2A.M. and they are in bed. Whoever can help I appreciate it.

 

[reaperstang]

I am assuming one of them was used in the Mach 1 and the other is used in the GT. From what I found though the Cobra used a different block altogether.

 

[LS1PUSSOUT]

Get the romeo. Its block was used on all newer 4.6 cars even the 03/04 cobra. Windsor sucks....

 

[reaperstang]

Do you suggest any rods, pistons, crankshaft, and such?

I know the 03-04 Cobras had the H-Beam Manley rods but is there something better that I should look into?

 

[LS1PUSSOUT]

depends on how much power your planning on making. The H beams have been run to 1000hp before. If you plan on making those kinds of numbers you might look into billet rods. Stock cobra crank is good, and just make sure yoyu get a good quality brand of pistons. Most will do the job, but the higher end pistons are JE, CP, Manley, Diamond, etc....

 

[reaperstang]

Is there anything else I may need to know in building a motor from the block up?

Is there maybe an estimated amount of money that I will spend if I go that route of using the Cobra crankshaft, some Manley Pistons, and such?

I appreciate all of your help.

 

[reaperstang]

This is currently the plan I have. Obviously I need to plan out a lot more but I think this is a good start.

Livernois Romeo 4.6 block = $399.99
Livernois Rotating Assembly = $2195.00
Livernois 4.6 L 2v Billet Camshaft L114(459KIT4-2V/4VB) = $499.99
Patriot Romeo Stage II Heads(1004R) = $1,395.00

With this set-up it will be running a 9:1 compression. So then when I get an SC or Turbo I will be hooked up.

 

[TwinTurbo4vGT]

Get the romeo. Its block was used on all newer 4.6 cars even the 03/04 cobra. Windsor sucks....

lol what are you talking about? The Windsor and Romeo used the exact same parts. The only difference about the windsor is they use 13 bolt heads, whereas the romeo uses 11.

 

[Double0fox]

lol what are you talking about? The Windsor and Romeo used the exact same parts. The only difference about the windsor is they use 13 bolt heads, whereas the romeo uses 11.

Actually thats for the valve covers. The heads bolt on just the same. But your right they are pretty much the same thing, so I don't see how one sucks????

 

[reaperstang]

No biggie the only block Livernois sells is the Romeo block.

 

[TwinTurbo4vGT]

No biggie the only block Livernois sells is the Romeo block.

buy it from lethal then. They sell both. I also have a set of 00 GT heads if u want em? 350 and their yours! Even comes with the intake manifold and all accessories fuel rails etc

 

[99MustangGTman]

dont buy patriot heads, they blow, also the windsor has an 8 bolt crank, on the GTs the romeo/windsor cranks are equally as strong/weak depending on how you look at it

 

[LS1PUSSOUT]

dont buy patriot heads, they blow, also the windsor has an 8 bolt crank, on the GTs the romeo/windsor cranks are equally as strong/weak depending on how you look at it

i think your the other way around windsor has 6 bolt crank and romeo has 8 bolt. Yes windsor sucks just because its not a romeo

 

[Zoie_daGT]

There is no real performance difference in the Windsor vs Romeo blocks. They both are NOT the weakpoint in the engine. The rods are. Since you are forgin the internals, you will be fine. The info on the forged parts are good. You may want to look into Modular mustang racing too. They have some killer deals and good stuff too. For what you are paying for the rotational assembly listed, you could get a who assembled shortblock.

As far as how to build your block; you have to decide what you want from your engine. You will need the K-member and springs too for the swap. Along w/ the GT computer.
Good luck.

 

[TwinTurbo4vGT]

i think your the other way around windsor has 6 bolt crank and romeo has 8 bolt. Yes windsor sucks just because its not a romeo

sorry, windsor has 8 bolt, romeo has 6 bolt.

 

[99MustangGTman]

sorry, windsor has 8 bolt, romeo has 6 bolt.

yeah exactly, maybe you were confused ls1killer with the cobra motor which is an 8bolt romeo

 

[LS1PUSSOUT]

yeah exactly, maybe you were confused ls1killer with the cobra motor which is an 8bolt romeo

I am thinking that because cobra cranks are 8 bolt and all the cobra blocks are romeo. So I guess I figured all the romeo blocks were 8 bolt. IDK I still say romeo is better...

 

[Double0fox]

buy it from lethal then. They sell both. I also have a set of 00 GT heads if u want em? 350 and their yours! Even comes with the intake manifold and all accessories fuel rails etc

I may be interested on this. But it won't be for a month.

 

[reaperstang]

dont buy patriot heads, they blow, also the windsor has an 8 bolt crank, on the GTs the romeo/windsor cranks are equally as strong/weak depending on how you look at it

Why do you say Patriot Heads suck? Did you have them and they broke or malfunctioned somehow?

Thanks Zoie daGT. I still have a lot to learn and the plan is to get all of this done before racing season next spring.

 

[REDFIREKNIGHT]

Romeo FTW. Windsor built modulor motors suck!