5.4L Marauder?

[mmmmmmarauder]

Just curious if anyone has replaced their 4.6L
32V with a 5.4L 32V (ala Navigator)...I really
think the torque would help alot during acceleration
from a dead stop...

I actually considered the V10 replacement (yes
police car prototypes have done it) but there is
way too much more work involved...

Question: Does the 5.4L drop in as a direct replacement
for the 4.6L or are any modifications necessary?
I am assuming the hood may be a little short, but
I always wanted a hood scoop anyway...

I appreciate all those that would chime in about
gears and chips and stuff...but $4000 into modifications
and I am really not happy...everyone tried their best
and meant well and were honest...but a 4.6L is a
4.6L and you can't fight the laws of physics.

Supercharging? I have this gut feeling that for the
price, the engine swap is the safer alternative and
won't strain the internals of an engine not designed for
the boost...

By the way...new crate engines (5.4L) were around
$5000 last time I checked...

Since I am asking questions...did anyone ever make
a stainless steel mesh grill and four round blacked-out
headlights for the Marauder (it used to be posted on
NBC Shooters SEMA photos)?

thanks,

Peter
greekchicago@hotmail.com

[Fourth Horseman]

Every previous thread on this subject has come to the conclusion that the 5.4 just won't fit in this car.

If it was me, and money was no object, I'd pull the engine and do a complete rebuild with all forged components and then supercharge the ****zle out of it. :)

[woaface]

Hmm. 5.4 has more torque but a 4.6 would have a higher RPM and would eventually overtake a 5.4? I don't know.

What kind of mods do you have? BillyGman didn't like his 4.10 or his 4.30...went with 4.56, might want to try that if you don't supercharge.

[MENINBLK]

mmmmmmarauder,

It all really depends on what your goals are...

Acceleration or Speed ?

A BIGGER Engine would definitely give you more acceleration with more Torque.
You would be better off taking your 4.6L and rebuilding it with new internals,
but you also have to remember that the vehicle you are launching weighs 4000+ lbs !

Since the 5.4L is way too big, why not go for the 5.0L ?

[woaface]

Since the 5.4L is way too big, why not go for the 5.0L ?
One of the vendors here, http://www.vtengines.com does the 5.0 stroker thing.

[dwasson]

Since the 5.4L is way too big, why not go for the 5.0L ?

I thought that way too big was just right. :up:

Seriously, I've read that the 5.4 will fit with the hood open. Isn't it a stroked 4.6?

[MENINBLK]

I'm pretty sure the 5.4L uses a larger block and bigger heads.
Accessories are pretty much interchangeable from the 4.6 to the 5.0 and back, but not the 5.4.

[TAF]

Every previous thread on this subject has come to the conclusion that the 5.4 just won't fit in this car.

If it was me, and money was no object, I'd pull the engine and do a complete rebuild with all forged components and then supercharge the ****zle out of it. :)
Or billet internals...then the 5.4 would never cross your mind again...and you would still have (essentially) a Marauder...and the fastest, baddest Marauder on the streets...:D

[MAD-3R]

When I fried my motor last year, I was cuntiplating a full engine swap. But I couldn't find a 5.4 Lighting Crate motor. I would have had to get a custome hood as well, but DAMNNNN it would have been a smoker.

[stevengerard]

HP sell cars Torque wins races, thus the desire for displacement. But I'm more than happy with the all around attributes of the MM especially when I have experienced first hand how fast a SCed one is!

[mmmmmmarauder]

when Ford was practicising on making Panther platforms
(were they called that? OK the Crown Vics)...a 351 engine
was actually an option (especially in Canada for a while)

I am assuming we have basically the same car as the old
style Crown Victoria/Grand Marquis series...I was thinking
the 5.4L would drop right in...in fact I remember a thread here
saying that the 5.4L and 4.6L have the same external dimensions
except for height...

Everyone talks about speed...fine if you wish to risk life and limb
and your license...but to me a "muscle car" is ALL ABOUT
staring someone down at a stoplight (preferably an import
econobox/wannabe sports car), snickering/sneering, perhaps
making a comment about the questionable lineage of their car
company or asking if their mom let them out of the backyard with
that toy...FLOORING IT and leaving them wondering how the
green light came on so fast that they didn't have a chance to react.

To me...all I want is to feel a PUSH/PULL,any push pull from a dead stop
to about thirty miles per hour, just a nudge in my seat, a hint of
the rollercoaster experience...

Instead I painfully spool up this undersized motor and gradually
come to an occasional HARD shift to second (yes, I had the level II
transmission rebuild, yes I have to explain to dates that there
isn't anything wrong with the car...it is SUPPOSED to be like that)

[89lxbill]

I don't know why it wouldn't fit. There are people swapping them into Mustangs hand over fist and the Marauder engine bay is much larger than a Mustang. Hood clearance would probably be the main issue.

[woaface]

HP sell cars Torque wins races, thus the desire for displacement. But I'm more than happy with the all around attributes of the MM especially when I have experienced first hand how fast a SCed one is!
I saw an extremely funny article on hp vs. tq in a ricer magazine once (it WAS funny) he ended up with: Horsepower is for speed, torque is for burnouts:up:

[MENINBLK]

Are you sure you're driving a Marauder ?

[LNYTUNS]

[QUOTE=mmmmmmarauder]when Ford was practicising on making Panther platforms
(were they called that? OK the Crown Vics)...a 351 engine
was actually an option (especially in Canada for a while)

I am assuming we have basically the same car as the old
style Crown Victoria/Grand Marquis series...I was thinking
the 5.4L would drop right in...in fact I remember a thread here
saying that the 5.4L and 4.6L have the same external dimensions
except for height...
QUOTE]

Back in the 80s the 5.0 and the 5.8 were all 2V motors. The heads alone make the 4.6 4V huge (let alone a 4V 5.4L) compared with my 5.0 motors. With the changes made in the body from 91 thru present there is less room under the hood. Lots more gadgets under the hood now too that eat up the space. Get yourself new internals, maybe a cast block. I don't think it will fit without a plasma cutting shoe horn.

Good Luck

[BillyGman]

If you're going for a 5.4L engine, a Navigator 5.4 would be a waste of time. just not enough power IMO. And going from a 4.6L to a 5.0 is hardly any difference in displacement at all. Again, not even worth it. The way I see it, there's only two ways to go to get a substantial increase in acceleration out of your Marauder:

#1. get a Ford 5.4L Lightning engine under there (assuming it will fit). But that will cost a whole lot more than that $5,000 Navigator engine.

#2. Get a Supercharger (I prefer a roots type for the extra Low-end torque). You won't even need the gears nor the higher stall speed w/the Trilogy S/Cer. if I knew that I was going to install the Trilogy kit in my car, I would've left the stock gears in there. Look at all the mods I've done to my car. I wasn't totally satisfied w/the torque it offered until I installed the Trilogy kit. My car has all the torque (both low-end and top end) of any 5.4L engined car that you'll encounter on the street short of a 150K 2005 Ford GT. The only thing that a Trilogy equipped Marauder doesn't have that a 5.4L engined car does is a deeper exhaust growl. And that's all. Take my word for it, for 6K, you won't make this car any faster nor accelerate any quicker than you will w/a Trilogy S/Cer kit. And PULEEEEEEZZZZEE let's not get into a "Which S/Cer is better?" debate here. I'm not knocking centrifugal S/Cers. It's just that the original post was concerning LOW-End torque, and off the line grunt, and that's what a roots S/Cer like the Trilogy one is best at.

You want low-end torque? Let me tell you this........w/the street tires on my car, I can't even hit half-pedal while at any time in first gear w/out spinning the tires all over the place. I have to wait until second gear to get into boost at all!!! And if you want smoke shows........I can smoke em from a dead punch through first gear and all the way through second gear w/the street tires (just as I'm sure any S/Ced Marauder can regardless of what type of S/Cer it has). That's why I've purchaased the P305 Nitto drag Radials for grip. This thing moves like a big block engined car off the line.

[BALKISSOON]

Sean Hyland Motorsport has a 5.2 stoker kit for the 4.6, It makes around 400 hp and 400 lbs of torque, when supercharged it will make 600hp and 525 lbs. of torque.
The site is seanhylandmotorsport.com

[Marauder]

5.4L engine is too tall for the panther platform cars.

It will fit but be ready to have a "HUGE" hood scoop or no hood at all.

[BillyGman]

Sean Hyland Motorsport has a 5.2 stoker kit for the 4.6, It makes around 400 hp and 400 lbs of torque, when supercharged it will make 600hp and 525 lbs. of torque.
The site is seanhylandmotorsport.com

but just keep in mind that this option will cost a whole lot more than the 6K for the S/Cer kit.

[MikesMerc]

Get a Supercharger (I prefer a roots type for the extra Low-end torque). You won't even need the gears nor the higher stall speed w/the Trilogy S/Cer.

I'm not knocking centrifugal S/Cers. It's just that the original post was concerning LOW-End torque, and off the line grunt, and that's what a roots S/Cer like the Trilogy one is best at.


Ditto!

I've had plenty of muscle cars in my lifetime, and I can tell you without hesitation that the roots blower is the single best mod you can make to your MM to make it feel like a big block. 10 psi at the crack of the throttle does amazing things.

Don't let the notion that supercharging your motor will break it. On the contrary, blown DOHC 4.6 motors have been rampaging the streets for years already. When it comes to power and reliability, its all in the tune. The prefab chip tune that comes with the Trilogy kit works great and is very safe. You can also get custom tuning to eek out every last ounce of power while remaining totally safe.

From dead stop, right off idle, I can literally melt my tires. No spooling up and loading the engine needed. In fact, I'm getting widened rims and nitto drag tires this weel to handle to tremendous torque. With only the Trilogy blower, an otherwise totally stock MM becomes a high 12 sec car. There is no other better bang for the buck.

[RCSignals]

when Ford was practicising on making Panther platforms
(were they called that? OK the Crown Vics)...a 351 engine
was actually an option (especially in Canada for a while)

I am assuming we have basically the same car as the old
style Crown Victoria/Grand Marquis series...I was thinking
the 5.4L would drop right in...in fact I remember a thread here
saying that the 5.4L and 4.6L have the same external dimensions
except for height...

Everyone talks about speed...fine if you wish to risk life and limb
and your license...but to me a "muscle car" is ALL ABOUT
staring someone down at a stoplight (preferably an import
econobox/wannabe sports car), snickering/sneering, perhaps
making a comment about the questionable lineage of their car
company or asking if their mom let them out of the backyard with
that toy...FLOORING IT and leaving them wondering how the
green light came on so fast that they didn't have a chance to react.

To me...all I want is to feel a PUSH/PULL,any push pull from a dead stop
to about thirty miles per hour, just a nudge in my seat, a hint of
the rollercoaster experience...

Instead I painfully spool up this undersized motor and gradually
come to an occasional HARD shift to second (yes, I had the level II
transmission rebuild, yes I have to explain to dates that there
isn't anything wrong with the car...it is SUPPOSED to be like that)

The current "panthers" are not the same as those built in the '80s. Not even close.

You have over $4,000 in mods and still don't have that low end torgue feel you want? You only want performance to 30 mph? Buy a Studebaker stump puller.

A supercharger won't do it for you? only more displacement will?

Where is Todd? He should be first to say "I smell a TROLL"

[TAF]

Where is Todd? He should be first to say "I smell a TROLL"
I'm here...smelled it a LONG time ago...'specially with 2 threads going on the same thing, from the same tro-....I mean MMMMMMMel Tillis...

[mmmmmmarauder]

what the heck is a Studebaker Stump Puller?


I have to assume that was a joke...but if a vendor sells it...


I will keep you posted on my attempts to buy and install the
new powerplant...you get to the point where you don't want to
play stoplight tag with cars that don't deserve to be on the same
street as the Marauder...and we GOT TO back up the looks with
the growl...

OK, I am stupid...what's a TROLL?

[woaface]

Is there now a schism between troll and ignoramus?

Maybe because he's 24 he's used to bigger cubbed chevy's or something...young peoples fast cars...like camaro's or something. I dunno, not trying to save anyone's arse here...

Anyways dude, a Troll is someone who comes in here with the intentions of making fun or demeaning the MM because they like something else better.

[woaface]

And what kind of mods do you have and you still can't get it off the line? Mine feels strongest between 0-30 and then 55-90mph than anything else (there's not a hugely noticable difference between 31 and 54 but it's there) and it's a 281. I sure as hell don't have a marauder with 5k worth of parts.

[BillyGman]

Well, assuming you're for real about all of this, I can definately understand someone who has put 4K worth of mods into a Marauder and NOT being satisfied, and NOT having enough low-end torque, because I was exactly in the same boat BEFORE I superharged my Marauder. There are only three ways to get more low-end torque than what a small engine like a 4.6L one offers:

A. Increase the displacement SIGNIFICANTLY (and I don't mean going from 4.6L to 5.0 or 5.2L).

B. Install a BIG Nitrous Oxide injection kit.

C. Install an intercooled Supercharger kit (preferably a roots type S/Cer IF Low-end torque is your priority).

[mmmmmmarauder]

I am not a "TROLL"...I own a 300A which I bought without a test drive based on Ford's reputation...and a cool poster of a Marauder smoking it's tires in front of a bunch of leather jacketed James Dean look-a-likes leaning on their old Marauders

I was just hoping sometime in the near future to have a hint of smoking rubber or muscle car testosterone...

My only problem is 0-30 acceleration...I wanted pull off the line...no spooling/reving/hard shifts...I hate getting beaten off the stoplight...

I am leaning larger displacement replacement motor (it is just against my better judgment to change the engine on a car with 8000 miles on it) or a roots supercharger...

Just for fun, do an internet search on the police interceptor Crown Victorias with V10 engines being installed...

[dwasson]

OK, I am stupid...what's a TROLL?

It's an ugly critter that lives under bridges.

[MENINBLK]

Just for fun, do an internet search on the police interceptor Crown Victorias with V10 engines being installed...

The CV and the GM have a different FRAME than the Marauder.
Our front suspension, engine and tranny mounting is different than the CV and the GM.



OK, I am stupid...what's a TROLL?

Ever read the story Three Billy Goats Gruff ?

[junehhan]

Hmm, I had no idea that the CV/GM had a different frame than the Marauder, but you do learn something new everyday. To be honest, I don't think it's fair to call Marauderrrr a troll, as he's just a little disappointed. Unfortunately, I think BillyGMan makes a good point and that doing a supercharger is going to be your best bet. Lidio currently has the fastest Marauder that we know of so far, and he's running near mid 11's. As far as worrying about the stock internals go, you can swap them out and I bet you could borrow a few parts from the Cobra bin since our motors are very similar. However, there are many people on this forum running a blower(some for a while now), and we havn't heard of anyone having an engine blow up yet.

[RCSignals]

Just for fun, do an internet search on the police interceptor Crown Victorias with V10 engines being installed...
The guy who does those used to post here.
There aren't very many of them, they're still in "development" and have been for a few years.
Fueled by propane they aren't that impressive.

[BillyGman]

there are many people on this forum running a blower(some for a while now), and we havn't heard of anyone having an engine blow up yet.

I agree. And that's what has been the deciding factor in my opt for a Supercharger for my Marauder. No, nothing is fool proof when it comes to Hi-performance, but I've spoken to several owners of Trilogy equipped Marauders, and one of them drives his back and forth to work as i do, and he had his Trilogy kit installed when the car had 32K on it, and it now has 43K on it, and everything is fine. my car had 11K on it when I installed the S/Cer, and there are a couple other guys who I've spoken to who not only race their S/ced marauders at the track ocassionaly, but who drive then primarily on the street just as all of us do, and they haven't had any problems either.

if you go on Lidio's website ( www.alternativeauto.com ), you'll see the "Lidio's rant" article he has on there where he describes how important it is to have a conservative engine tune on your car if it's S/Ced, and how he has tuned several dozen S/ced Mustangs that also have the 4.6L engine w/out the forged pistons nor the forged steel crankshafts, and none of them has had problems. And Lidio's experience w/S/Ced Mustang engines that do NOT have the forged internals, goes back more than ten years ago.

And Lidio is the one who burns all the chips that come w/the Trilogy S/Cer kits. So to me that says a lot about what you can safely do to a 4.6L Ford engine in the way of S/Cing. And that goes for weather you're talking a centrifugal S/Cer, or a roots type S/Cer, because Lidio installs both kinds on Mustangs, and has been doing so for awhile.

Remember, the biggest danger to a S/Ced engine is detonating (aka "pinging" or "knocking"). That will crack or melt pistons real quick. But having a conservative Air/fuel ratio, along w/a conservative timing advance curve will prevent the engine from detonatioin. And that all is in the tune.

I'm not claiming to be an expert on this in any way, but I did do my homework before I made the decision to S/C my Marauder. I purchased and read three books on S/Cing, read all I can find on the subject on the internet, Read the entire Magnuson/Eaton supercharger website, and talked to as many guys on this board on the phone and in person that I could find who had already S/Ced their Marauders. Let me point out that because my interest and therefore my focus was on the Eaton roots type S/Cer, it was only the Trilogy customers who I've sought to talk to. And that in no way disqulifies the guys who have a centrifugal s/cer on their Marauder. But all I can tell you is what I've learned from what knowledge I myself have gained, and much of that was due to seeking info on the roots type S/Cer.

In conclusion, all I can tell you is that I was originally dead set against S/Cing my Marauder because I had the same concerns as you do about durability issues. But looking back on it now, I think my concerns where only there because I hadn't really much knowledge on the subject, especially concerning Marauders specifically, and the 4.6L engine in general, when it comes to S/Cing.

[SergntMac]

Getting back to the topic at hand...

The 5.4 and 4.6 share the same block, same bore, just longer rods and different crank offset.

5.4 has lower compression, which is good for supercharging. More torque is good too, but it's not that much more considering the investment.
4.6 heads won't clear the pistons, and 5.4 heads are taller, which changes the "V" shape ever so slightly. The 4.6 intake will not fit this difference.

5.4 intake is where the engine height comes in, it's 1.5" taller than the 4.6.
Not to mention the intake's front facing air induction, a custom intake will be necessary, and expensive.

Other than this, piece of cake.

To get where you want to be, supercharge your 4.6 with one of the half dozen options now available. Your investment will be about the same, 6-7K maybe, but all worth it.

Our 4.6 engines are a lot stronger than many think. There are a lot of way to build power, but in the end, it's all in the tuning.

[BillyGman]

hmmm, so the 4.6 and 5.4 motors share the same bore and block, but are simply different strokes. I didn't know that. I guess it's just like the Chevy 327's and 350's were. Same bore, but different strokes. Good info MAC.

[BALKISSOON]

but just keep in mind that this option will cost a whole lot more than the 6K for the S/Cer kit.

Yes your right it's costly, the stroker kit is $20, 000 Canadian.
I agree supercharging is the most cost effective way to get more power, for 6-8 k you can make serious power.

Richard
98 Mercury Grand Marquis LS

[89lxbill]

I hate to differ with the opinions here, but the 4.6L and 5.4L are abt as common as the 302 and 351. Same Bore, different stroke, rods, and block. The 5.4L is a taller block than the 4.6L hence the wider intake. I have seen them both torn down in the shop and they are definitly different. Actually the heads look very similar. The truck intakes are much taller than the cars. The truck 4.6L intake is alot taller than its car counterpart.

[BillyGman]

Well, the bottom line I suppose is that if you opt for a 5.4L engine(assuming that you can even find a way for the thang to fit) it's going to be very costly to get anything other than an ordinary 5.4 engine. A lot more than a S/Cer would cost you. And if you simply settle for an ordinary SUV 5.4 engine, you would gain vert little in the way of torque, so it would be a very dissapointing experience I'm sure.

[mungce]

It sounds like you have plenty of " regular " cars. Why try to fake a Crown Vic to a Marauder ? You and every other Marauder owner would know the difference. Perhaps sell a few vehilcles, and get a REAL MARAUDER, some are still available if you search hard enough.

Jim W Williams
Ft.Worth, Texas

[Vortex]

Actually, if I was going to spend all those bucks (8-10k plus or whatever) on my car Id try to drop a 429 4V CJ with a C6 in it. No need for nitrous/blower/turbo or anything else. Ive had big block Fords before and though I haven done any measurements, our 4.6 DOHC engines look huge for such a small displacement. I dont see why some enterprising motorhead hasnt done this already. I know big blocks are taller, the hood would have to be modified but I would think it would fit side to side and front to back.

[FordNut]

I dont see why some enterprising motorhead hasnt done this already. .
Maybe something to do with the fact that we can highly modify the modern engines and still get 20 mpg?

[rocknrod]

One of the vendors here, http://www.vtengines.com (http://www.vtengines.com/) does the 5.0 stroker thing.And they sell the 5.4 Cobra Longblocks for only $9,000.00 Street/Race:):(
So I do my "convert" program and come with 280 cubic inches = 4.6 liter ?
Wow, I should have put one of these in my 32. Much more power in a smaller package.

[mrjones]

If someone were really considering this, other than the Lightning engine, the new truck 3V 5.4 would be the way to go. It's got 300 hp and lots more torque - way down low in the rpm range - and it does it with regular gas. If you supercharged that, then you'd be talking! You'd probably need to swap in the transmission to go with it. I don't believe the 4R70/75 would last long with a supercharged 5.4. Maybe not long with a NA 5.4.

[MENINBLK]

To do this right would require fabricating new subframes to clear both the engine and transmission.
You would want to put the Lightning Drivetrain into the Marauder, both Engine (w/SC) and Transmission.
You would also need to rework the front suspension to support the added weight without loosing GROUND CLEARANCE... :eek:
And the rear of the car would have to be raised slightly to keep the raked look.

Add to this the need for a custom made hood with either a shaker,
or a lifted center section for clearance, and you should be golden.

Add the Kooks exhaust, and you should retain the Marauder sound.
The headers should fit nicely if the side to side measurements don't change,
and your subframe centers the engine, top to bottom in the same position as the original engine.

All of this is good because you can then go from the 18" wheels we have to a 20" wheel,
have some more tire sizes to choose from, and be able to keep the Marauder's look.

Just don't think about driving it in the snow... ;(

hmmmm....
Sounds like a project for next summer !!!

[grampaws]

http://www.seanhylandmotorsport.com/frppcrate/modularreplacement.shtml
http://www.seanhylandmotorsport.com/mustang-crate-engines.shtmlhttp://www.seanhylandmotorsport.com/power_packages_2005_mustang.sh tml (http://www.seanhylandmotorsport.com/mustang-crate-engines.shtmlhttp://www.seanhylandmotorsport.com/power_packages_2005_mustang.sh tml)


check this out for some answers and their 6.0 litre motor....
awfully expensive ....
:banana:

[MENINBLK]

6.0L Mustang Engine (http://www.seanhylandmotorsport.com/power_packages_2005_mustang.sh tml)
check this out for some answers and their 6.0 litre motor....
awfully expensive ....
:banana:

You still need a transmission to couple the engine to.

[grampaws]

Well if your going to go this far a transmission..

is just a drop in the bucket!! A S/C and is the better bang for
the buck but if money's no object and a big hood scoop doesn't
bother you!

[MENINBLK]

Well if your going to go this far a transmission..

is just a drop in the bucket!! A S/C and is the better bang for
the buck but if money's no object and a big hood scoop doesn't
bother you!

If money was no object....

A Super Charger would be the last thing I invested in.

We've said it many times, and I'll say it again here...

"There is no replacement for displacement"

I would rather spend my money shoe horning the largest engine I could find into the Marauder,
couple it with the best bullet proof transmission that could handle the power,
and then, and only then, if I still wasn't satisfied, look at Forced Induction.

If I want the cheapest, fastest, and shortest route to power,
then conservatively adding Forced Induction to the stock engine is the way to go.

Done right, the hood scoop will only add 2" to the top of the hood.
I have some ideas and they all complement the Marauder nicely,
without loosing the Marauder look.

But if money was no object.... :D

[martyo]

Done right, the hood scoop will only add 2" to the top of the hood.
I have some ideas and they all complement the Marauder nicely,
without loosing the Marauder look.

Why not share them? Next winter I hope to put a new hood on LK.

[Vortex]

If money was no object....

A Super Charger would be the last thing I invested in.

We've said it many times, and I'll say it again here...

"There is no replacement for displacement"

I would rather spend my money shoe horning the largest engine I could find into the Marauder,
couple it with the best bullet proof transmission that could handle the power,
and then, and only then, if I still wasn't satisfied, look at Forced Induction.

If I want the cheapest, fastest, and shortest route to power,
then conservatively adding Forced Induction to the stock engine is the way to go.

Done right, the hood scoop will only add 2" to the top of the hood.
I have some ideas and they all complement the Marauder nicely,
without loosing the Marauder look.

But if money was no object.... :D
I agree totally. If money were no object, then go real "old school" and drop in a 427 side-oiler like the original! That would get you rolling down the road at a good clip. Change the hood and I bet it would fit.

[cyclone03]

First to Sgt.Mac the 4.6 and 5.4 block are in no way the same,the 5.4 has a taller deck hieght. The 5.4 at10.079 to the 4.6 at 8.937.


With that info a 5.4DOHC would be at least 1.2" taller if you could adapt the stock Marauder intake,but it's the width that makes the swap hard as the engine gets taller it also gets wider.
As the 4.6 sits in my Marauder now I see about an inch of clearence to the A/C box on the right and the Brake booster on the left.The killer may be the windshied wipers though.Look at the rear drivers side of the engine on the firewall note the clearence to the cam cover,in this area the 5.4 will be about 2 inchs taller.


If you have the money stop asking a bunch of internet know nothings,prove us all wroung and just do it.

Then post all that's required,or build an install kit and sell it.

I can't spend that kind of money and have the car down that long.

Best bet,follow BillyGMans advice-SUPERCHARGER!
He has been there and done that.

BTW No off the shelf header will work with a 5.4 because the 5.4 is wider! and taller!

You need to get with some local Marauder owners,or hit a meet and check out how the Kooks headers and DR systems fit,now move them up and out at least an inch and a half on both sides,my kooks will hit the A/c box in about 1 inch up hit the crossmember,steering shaft and maybe the floor.It will all be ugly.

Don't forget the custom tuning required to get all the power from your new set up.


At $6000 the Trilogy is a bargin. That $5000 DOHC 5.4 will cost about $7500 with good headers(custom) and tune,plus modding the A/C box and installing a smaller brake booster.Oh,don't forget that windshiedwiper bracket.

And that assumes your doing the removal and install yourself $0.
A swap at a shop that knows what there doing will add at least $2000-5000 in labor.l


I'm not trying to talk you out of your dream ,but, well....

I worked at a shop that handled this kind of stuff in the early 90's.
We had a guy come in who wanted a 500ci Mustang. So he brought us a nice 89 GT. Crate 500ci/460 from FRPP $$$ and a 4spd GM auto and the adapters required.
He spent over $12000 on all the right parts,plus the car,about $7000 in the day and paid us another $5000 for the install more mods and tuning and guess what?

It only ran high 12's our supercharged 5.0 with stock bottom ends ran low 12's and got much better milage and no overheating. For only about $5000 back then.

Just Supercharge it baby.
If you must blaze your own trail Turbo it.

[MikesMerc]

Why is this discussion happening? The motor will not fit, plain and simple. Been here and done this. Steve Babcock and Ned Nuss already provided all the messy sorded details on how it did not work from the go when the concept Marauder was being designed.

The motor simply will not fit without major rework. How much rework? Enough that Steve's team gave up the idea quickly and stayed with the 4.6. A 5.4 in a panther is just not going to be a practical reality.

[merc406]

Why is this discussion happening? The motor will not fit, plain and simple. Been here and done this. Steve Babcock and Ned Nuss already provided all the messy sorded details on how it did not work from the go when the concept Marauder was being designed.

The motor simply will not fit without major rework. How much rework? Enough that Steve's team gave up the idea quickly and stayed with the 4.6. A 5.4 in a panther is just not going to be a practical reality.




Mike, beside's Team Ford not being able to do it, don't mean it can't be done, they didn't try hard enough, So ya have to do some cuttin and hackin, a hot rodder will get one in, and I thought I saw one here already from SEMA awhile back and Vortex, an iron FE or a 429-460? the Marauder already weighs too much, those motors are way too heavy at almost 700 lbs., less with alum, parts. Go with the 5.4 from KarKraft, the one with 2 fours and it's own computer. :rasta:

[TooManyFords]

Mike, beside's Team Ford not being able to do it, don't mean it can't be done, they didn't try hard enough, So ya have to do some cuttin and hackin, a hot rodder will get one in, and I thought I saw one here already from SEMA awhile back and Vortex, an iron FE or a 429-460? the Marauder already weighs too much, those motors are way too heavy at almost 700 lbs., less with alum, parts. Go with the 5.4 from KarKraft, the one with 2 fours and it's own computer. :rasta:
I know this thread is about a 5.4 in a marauder, but...

If we already know we are 2.2 tons of fun [or more depending on the MM driver! ] , what's another 200 pounds between friends?!
:D
I -know- the 460 will fit and with it stroked to 572 (think TWO 4.6's in there!) I'm sure the car won't mind the extra weight. Then put the squeeze to it to get a guaranteed 850 hp. 730 ft./lb torque. It won't get 20mpg, but it would shred any tire you want to put behind it.

It's on my list right now and I've already got the block. When it's done I think I'll slip it into my pickup while waiting for that "just right" MM to come along. ;)

[martyo]

It's on my list right now and I've already got the block. When it's done I think I'll slip it into my pickup while waiting for that "just right" MM to come along. ;)

Way cool! I am waiting to see the results!

[Vortex]

I know this thread is about a 5.4 in a marauder, but...

If we already know we are 2.2 tons of fun [or more depending on the MM driver! ] , what's another 200 pounds between friends?!
:D
I -know- the 460 will fit and with it stroked to 572 (think TWO 4.6's in there!) I'm sure the car won't mind the extra weight. Then put the squeeze to it to get a guaranteed 850 hp. 730 ft./lb torque. It won't get 20mpg, but it would shred any tire you want to put behind it.

It's on my list right now and I've already got the block. When it's done I think I'll slip it into my pickup while waiting for that "just right" MM to come along. ;)
I'd love to see this get done one day!

[blackf0rk]

A friend of mine started to transplant a fairly huge motor into this Mustang. Took it the track and bent the crap out of the frame it had so much torque LOL

[SergntMac]

First to Sgt.Mac the 4.6 and 5.4 block are in no way the same,the 5.4 has a taller deck hieght. The 5.4 at10.079 to the 4.6 at 8.937.
WTF are you talking about Lance, when in the hell did I say that?

[Joe Walsh]

Getting back to the topic at hand...

The 5.4 and 4.6 share the same block, same bore, just longer rods and different crank offset.

5.4 has lower compression, which is good for supercharging. More torque is good too, but it's not that much more considering the investment.
4.6 heads won't clear the pistons, and 5.4 heads are taller, which changes the "V" shape ever so slightly. The 4.6 intake will not fit this difference.

5.4 intake is where the engine height comes in, it's 1.5" taller than the 4.6.
Not to mention the intake's front facing air induction, a custom intake will be necessary, and expensive.



No flame intended, but I thought the same thing that Lance did when I read your post.

[SergntMac]

Post? Where? What post!


Oh...You mean that crap from LAST year??? Uh gawd...


Got bad 411 early in the game, what are you gonna do...

[grampaws]

I would personally not change the motor in my marauder...

as it is a limited edition car..I would find an old Interceptor
and do the mods hood,big motor and manual trans...then I wouldn't
be upset if I had to cut something..Hack it and make it fit!!:burnout:

[cyclone03]

WTF are you talking about Lance, when in the hell did I say that?


May 18th,2004.
In this thread.

BTW If I would have noticed this thread was a year old I would not have posted at all.

[metroplex]

Ford Falcon XR8, 5.4L quad-cam V8, normally aspirated, 350 hp. 4-door sedan.


















Only available in Australia, thank you very much Ford Moron Company. :(

[martyo]

Got bad 411 early in the game, what are you gonna do...

Not let BillyGMan read it thats for damn sure!

:rofl:

[metroplex]

BTW

The Falcon XR8's 5.4l quad-cam V8 is hand-assembled in Australia's "Last V8" engine facility. The Ford GT's 5.4L quad-cam V8 is hand-assembled in Romeo, MI. If the Australian work ethic is much better than the US work ethic, it's probably worth it to import the Australian 5.4L quad-cam V8.

[metroplex]

Here are more specs on the 5.4L quad cam V8 "Boss 260" used in Australia:
Normally aspirated
350 hp @ 5250 RPM
370 ft-lb @ 4250 RPM
The car costs $52k AUD or roughly $43k USD, assuming you lived in AUS.

The turbocharged 4.0L DOHC I6 used in the Falcon XR6T:
321 hp @ 5250 RPM
331 ft-lb @ 4500 RPM
It's a Barra 240T 4.0L DOHC VCT I6 Turbo.
Car costs $46k AUD or about $36k USD.