Who will swap for the new 7.3 V8!

[Fatguy]

Go back and re-read my posts. No where did I ever tout any benefits of running the 7.3 over a coyote in a S550.

And one more thing. If Godzilla is just 10 percent better in head flow than the previous generation, then it will make more horsepower and way more torque than the Coyote effectively knocking that engine down at level in the hierarchy. I’m tending to engineermike’s take on this with them going just for torque, but who knows.


That is the real point of consternation in this thread - that Godzilla could live up to its name with a bigger motor, more horsepower and maybe 130 ft lb more of torque. And that’s from the factory stock!

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[WildHorse]

Suicide prevention hotline. Familiar number?

If I ever tried putting a 7.3 into a Mustang,, you bet. Here's an article to read, or if you don't feel like reading,
I'll break it down for you: a 7.3 pushrod V-8 gas engine specifically made for 8500+lb trucks will be an absolute
TURD in a Mustang.
https://www.roadandtrack.com/new-ca...9/ford-super-duty-73-v8-engine-details-specs/

 

[Erik427]

The truth is that the 7.3 fits without any cutting.
So does a LS chevy.
So does a 3rd gen Hemi.
So does a SBF.
All this cutting out the firewall and crash bracing is utter crap
designed to discourage anybody from trying.

Well there are S550 Stangs that have BBF, SBC, LS Chevy, SBF and 3rd gen Hemi swaps
done without any cutting what so ever.
The LS Chevy is the most popular of them all.

I'm hoping the 7.3 will help stop the LS swap rampage that's taking place with Mustangs.
The Coyote surely isn't slowing this trend down.

 

[bootlegger]

I'm hoping the 7.3 will help stop the LS swap rampage that's taking place with Mustangs.
The Coyote surely isn't slowing this trend down.

This is only a thing in your mind. We have a very large Mustang club down here, and not a single S550 has an LS engine swap.

 

[BmacIL]

The truth is that the 7.3 fits without any cutting.
So does a LS chevy.
So does a 3rd gen Hemi.
So does a SBF.
All this cutting out the firewall and crash bracing is utter crap
designed to discourage anybody from trying.

Well there are S550 Stangs that have BBF, SBC, LS Chevy, SBF and 3rd gen Hemi swaps
done without any cutting what so ever.
The LS Chevy is the most popular of them all.

I'm hoping the 7.3 will help stop the LS swap rampage that's taking place with Mustangs.
The Coyote surely isn't slowing this trend down.

Stop lying. You have shown no proof of that and people who's job it is to know that have said it does not fit without body mods. Stop lying.

 

[millhouse]

I've seen some crazy stuff too, but that's not a swap, that's a stuff lol. Making custom brackets and mounts to put an engine that does fit in an existing space is very different from carving out significant chunks of the BIW crash structure and dash panel AND the other stuff.

Making custom brackets and mounts used to be par for the course in nearly every engine swap.

As of right now, none knows how much (if any) firewall will need to be carved out...but cutting into the crash structure is certainly not a significant challenge. People hack away all sorts of critical areas for custom builds all the time. Also keep in mind, these engines are going to be quite a bit narrower and shorter than the coyote.

Some people also seem to forget that the 03/04 cobra also had a (GASP) cast iron block. These 7.3L engines are still going to have aluminum heads and plastic intake manifolds. While they most certainly will be heavier than the coyote, I would guess it would likely come in around 100lbs heavier than a chevy 6.2 engine, which is slightly lighter than the coyote already. You have to remember this engine will likely respond extremely well to a cam swap (like nearly all OHV engines) as well as some gentle head and intake massaging. It would be interesting to sea a near 600hp NA engine in a S550. It would be a blast down the 1/4 mile.

The more I read about this thing, the more I can't wait until they start hitting the junkyards. I would love to put one of these along with a 10 speed in a foxbody.

 

[BmacIL]

Making custom brackets and mounts used to be par for the course in nearly every engine swap.

As of right now, none knows how much (if any) firewall will need to be carved out...but cutting into the crash structure is certainly not a significant challenge. People hack away all sorts of critical areas for custom builds all the time. Also keep in mind, these engines are going to be quite a bit narrower and shorter than the coyote.

Some people also seem to forget that the 03/04 cobra also had a (GASP) cast iron block. These 7.3L engines are still going to have aluminum heads and plastic intake manifolds. While they most certainly will be heavier than the coyote, I would guess it would likely come in around 100lbs heavier than a chevy 6.2 engine, which is slightly lighter than the coyote already. You have to remember this engine will likely respond extremely well to a cam swap (like nearly all OHV engines) as well as some gentle head and intake massaging. It would be interesting to sea a near 600hp NA engine in a S550. It would be a blast down the 1/4 mile.

The more I read about this thing, the more I can't wait until they start hitting the junkyards. I would love to put one of these along with a 10 speed in a foxbody.

You're right that the potential is there with a good amount of changes, but you'd also likely need new heads with larger valves to make this good for a performance car, in addition to cam, manifold changes. The induction system, all the way up to and including the valves are sized for peak efficiency and torque in a truck application, not higher power. No one has argued that it can't be made to be a very powerful engine, just that the cost to do so in an S550, is completely asinine and stupid.

 

[bootlegger]

Making custom brackets and mounts used to be par for the course in nearly every engine swap.

As of right now, none knows how much (if any) firewall will need to be carved out...but cutting into the crash structure is certainly not a significant challenge. People hack away all sorts of critical areas for custom builds all the time. Also keep in mind, these engines are going to be quite a bit narrower and shorter than the coyote.

Some people also seem to forget that the 03/04 cobra also had a (GASP) cast iron block. These 7.3L engines are still going to have aluminum heads and plastic intake manifolds. While they most certainly will be heavier than the coyote, I would guess it would likely come in around 100lbs heavier than a chevy 6.2 engine, which is slightly lighter than the coyote already. You have to remember this engine will likely respond extremely well to a cam swap (like nearly all OHV engines) as well as some gentle head and intake massaging. It would be interesting to sea a near 600hp NA engine in a S550. It would be a blast down the 1/4 mile.

The more I read about this thing, the more I can't wait until they start hitting the junkyards. I would love to put one of these along with a 10 speed in a foxbody.

Why not just go with old reliable in that case? Ford already offers crate performance pushrod engines that will be much less complicated. https://performanceparts.ford.com/engines/#351
I mean, when you are to the point of gutting the car, cutting into vital support beams, and changing out the ECU/wiring/CAN systems, you might as well go crate 427 with a stand-alone fuel system. A rebuilt 427 will still likely be cheaper than a junk yard 7.3.

 

[MaskedRacerX]

Are all Canadians delusional?

A bit late, but no, most are awesome people (my family did a week in old Montreal for christmas last year, so fun, we go up about every other year).

I've seen some crazy stuff too, but that's not a swap, that's a stuff lol. Making custom brackets and mounts to put an engine that does fit in an existing space is very different from carving out significant chunks of the BIW crash structure and dash panel AND the other stuff.

Yeah, I wonder about things like insurance, you wreck your Frankenstein's monster, the whole front end collapses, inspector comes out, indicates the car had significant structural modifications, are you paying your own hospital bills?

 

[Norm Peterson]

Hey Norm,

Remember the Monza V8 from the 1970s. They had to lift the engine to change the plugs. I believe some found a permanent solution by drilling access holes in the body work. And that was factory.

https://www.nytimes.com/1975/01/10/...d-in-replacing-a-plug-of-chevrolet-monza.html

The 7.3 is smaller in every other dimesion so maintenance should be easy.

That doesn't solve the matter of fitting the engine into the car in the first place. Either the firewall/trans tunnel or the radiator support end is going to need rework, and tweaking either of those is going to get into a crash recertification mess if done at the OE level. Aftermarket swappers don't even have the capability to get involved with stuff like that, so they'll either ignore it completely or add a strange-looking brace or two and hope.

Back in the 1960's I think it was the swappers who first reworked the 1st gen spring towers to permit fitting the FE engines. Ford eventually did the same thing, most likely so they could get the GT 390 out the door. I don't see even that smaller amount of rework happening these days unless it could benefit the entire Mustang line directly.


Norm

 

[Big Boss]

The truth is that the 7.3 fits without any cutting.
So does a LS chevy.
So does a 3rd gen Hemi.
So does a SBF.
All this cutting out the firewall and crash bracing is utter crap
designed to discourage anybody from trying.

Well there are S550 Stangs that have BBF, SBC, LS Chevy, SBF and 3rd gen Hemi swaps
done without any cutting what so ever.
The LS Chevy is the most popular of them all.

I'm hoping the 7.3 will help stop the LS swap rampage that's taking place with Mustangs.
The Coyote surely isn't slowing this trend down.

Yeah, about that it's not happening because it's not a common swap.

I have seen a handful of LS swaps into foxes. Maybe 2 or 3 LS swapped S197s. Hell I have seen more coyote swapped new edges than LS swapped new edges. Still only seen one guy trying to swap an LS into a S550.

 

[TexasRebel]

I guarantee most would walk right past the common turbo powered mustangs and GT350's and walk right up to a 7.3 swapped beast. There is no reason it can't be cleanly installed, and I have a feeling the year after it's released you'll see one in SEMA shoehorned into an S550....with swap k-members and cross-members likely out the following year.

Sure it can be a clean install... but it'll likely be a trailered bucket-case that can't run under it's own power.

 

[Fatguy]

I guarantee most would walk right past the common turbo powered mustangs and GT350's and walk right up to a 7.3 swapped beast. There is no reason it can't be cleanly installed, and I have a feeling the year after it's released you'll see one in SEMA shoehorned into an S550....with swap k-members and cross-members likely out the following year.

Hey Millhouse,


I hope you now see how things are on the other side.


They simply can’t understand the appeal of a traditional iron big block 2 valve with roller rockers on an iconic pony car like the Mustang. They want you to - or demand you - embrace the multi-valve and multi-cam engines littered all over the place these days. It’s called the “herd mentality”. They use numbers and social ploys to squash any witty/unique or creative ideas that may be popular if just given a chance. They are a drag on creativity. What is their solution? I guarantee it won’t be a creative one. Just more of the same.


You watch - if the retro niche V8 swaps get popular the press will get on board and the very people here who pushed back on the idea will somehow try to take part credit for it.


Human nature never changes...

 

[TexasRebel]

Even Ford admits the swaps are already in the works.

I quote, "Already in the works."
...with an engine that doesn't yet exist.

This isn't about weather somebody with more money and time than brains will put a 7.3L into an S550 before being baffled why it's slower and nose-heavy. It's that, and I emphasize, FORD HAS NO INTENTION OF IT EVER HAPPENING. Which means 1) no future plans for production, and 2) no swap support.

 

[bootlegger]

Hey Millhouse,


I hope you now see how things are on the other side.


They simply can’t understand the appeal of a traditional iron big block 2 valve with roller rockers on an iconic pony car like the Mustang. They want you to - or demand you - embrace the multi-valve and multi-cam engines littered all over the place these days. It’s called the “herd mentality”. They use numbers and social ploys to squash any witty/unique or creative ideas that may be popular if just given a chance. They are a drag on creativity. What is their solution? I guarantee it won’t be a creative one. Just more of the same.


You watch - if the retro niche V8 swaps get popular the press will get on board and the very people here who pushed back on the idea will somehow try to take part credit for it.


Human nature never changes...

Creativity just to be creative works more in the art world than in auto. When it comes to auto, performance rules. Spending more money to be as-fast or possibly slower isn't a popular option. No one is demanding you embrace better performing and more efficient engines.

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