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Thread: In depth short block info for the new 7.3 Ford.

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    In depth short block info for the new 7.3 Ford.

    Guy in the vid already has one in a Fox. Said no hacking, or cutting is required for the 7.3/10spd combo.


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    Registered Member mogs01gt's Avatar

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    low RPM beast. It produces 400ft/lbs at 1500 rpm.

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    DANSBIRD's Avatar

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    Quote Originally Posted by mogs01gt View Post
    low RPM beast. It produces 400ft/lbs at 1500 rpm.

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    Come at me bro! ChillPhatCat's Avatar

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    How many more times can he ask if the engine will handle boost? This guy is obsessed with boost. lol

    I think I should put this in my fox... and then post more pics of my XT.

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    Registered Member mogs01gt's Avatar

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    Quote Originally Posted by ChillPhatCat View Post
    How many more times can he ask if the engine will handle boost? This guy is obsessed with boost. lol
    I think I should put this in my fox... and then post more pics of my XT.
    Well the Coyote engine, LS and 392 Hemi are all better for a performance car. I know the aluminum block of the Coyote and LS really saves weight.

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    Quote Originally Posted by ChillPhatCat View Post
    How many more times can he ask if the engine will handle boost? This guy is obsessed with boost. lol

    I think I should put this in my fox... and then post more pics of my XT.
    This guy is THE Mustang homer and was the guy who got early access to the GT500 and ran mid 10's in FL last spring.

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    Registered Member NHRATA01's Avatar

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    The sawcut between the bores is something I've never seen before. I think I'd prefer a solid connection between the cylinders the full length (I saw later in the video when they cut below the deck, that the saw cut does not go down that deep), but I'm betting the engineers who chose that are smarter than I, would just like to understand their logic.

    I think I prefer the LS style oil pump run directly off the crank vs. a chain drive, just seems like a potential fail point.

    Also curious about how that water pump is "integrated" into the front cover, it was hard to tell from the video.

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    Quote Originally Posted by NHRATA01 View Post
    The sawcut between the bores is something I've never seen before. I think I'd prefer a solid connection between the cylinders the full length (I saw later in the video when they cut below the deck, that the saw cut does not go down that deep), but I'm betting the engineers who chose that are smarter than I, would just like to understand their logic.

    I think I prefer the LS style oil pump run directly off the crank vs. a chain drive, just seems like a potential fail point.

    Also curious about how that water pump is "integrated" into the front cover, it was hard to tell from the video.
    Ever seen a 5.9 Cummins 12/24V setup?
    Looks like that.

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    Bugzapper gonna zap 5.0THIS's Avatar

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    Yes I would surely use this motor as my boost swap candidate. Because a regular 5.0 coyote motor isnt good enough.

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    Coastal Elite Crew Rich_S's Avatar

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    LOL, pushrods. Did Ford just hire a bunch of laid off GM engineers or something?

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    Come at me bro! ChillPhatCat's Avatar

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    I love the youtube comments about that fox body swap... they're all like thank god Ford has an answer to the problem with LS engine swaps into fox bodies. Hint: these two things are not the same.

    I can buy locally, a Silverado for $1000 with all the stuff I need to get the engine running right there, less exhaust and engine/trans mounts... I think I've come full circle back to a 5.3 swap into my fox because it is just too cheap to pass up.
    Last edited by ChillPhatCat; 01-30-2020 at 09:08 PM.

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    Quote Originally Posted by Rich_S View Post
    LOL, pushrods. Did Ford just hire a bunch of laid off GM engineers or something?
    It's perfect for it's application.
    OHC(s) would gain absolutely nothing but increased cost, reduced longevity, and harder to repair.

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    Quote Originally Posted by ChillPhatCat View Post
    I love the youtube comments about that fox body swap... they're all like thank god Ford has an answer to the problem with LS engine swaps into fox bodies. Hint: these two things are not the same.

    I can buy locally, a Silverado for $1000 with all the stuff I need to get the engine running right there, less exhaust and engine/trans mounts... I think I've come full circle back to a 5.3 swap into my fox because it is just too cheap to pass up.
    I really like the new 7.3,but there simply is no better engine in history for transplants than a LS variant.

    I get that someone may want to keep their Ford all Ford, but you can't do BETTER than an LS.

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    DANSBIRD's Avatar

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    Quote Originally Posted by No F-bdy Bs View Post
    It's perfect for it's application.
    OHC(s) would gain absolutely nothing but increased cost, reduced longevity, and harder to repair.
    He's trolling and you bit the hook.
    Last edited by DANSBIRD; 01-31-2020 at 06:01 PM.

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    Quote Originally Posted by DANSBIRD View Post
    He's trolling and you bit the hook.
    He is 100% serious.
    He has this thing about OHC engines

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    DANSBIRD's Avatar

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    Quote Originally Posted by No F-bdy Bs View Post
    He is 100% serious.
    He has this thing about OHC engines
    He also has this thing about trolling when he knows it will cause a reaction.

    Dole and Kobe do the same thing.

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    Coastal Elite Crew Rich_S's Avatar

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    You're both right. I'm trolling, but I also think OHC is a better design. I'll grant No Fdy's point that for a pickup truck hauling shit around, pushrod engines are fine and are simpler and more compact. I also like randomly making fun of GM.

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    Bugzapper gonna zap 5.0THIS's Avatar

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    Quote Originally Posted by Rich_S View Post
    You're both right. I'm trolling, but I also think OHC is a better design. I'll grant No Fdy's point that for a pickup truck hauling shit around, pushrod engines are fine and are simpler and more compact. I also like randomly making fun of GM.
    Pushrods work fine too in performance applications. GM proved that repeatedly.

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    Coastal Elite Crew Rich_S's Avatar

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    Quote Originally Posted by 5.0THIS View Post
    Pushrods work fine too in performance applications. GM proved that repeatedly.
    I mean, people went fast with flat head fords too, but no one is going to seriously claim that valve in block is a good design for performance applications.

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    Quote Originally Posted by Rich_S View Post
    I mean, people went fast with flat head fords too, but no one is going to seriously claim that valve in block is a good design for performance applications.
    LS1

    It’s still a force of nature over 20 years later.

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    Bugzapper gonna zap 5.0THIS's Avatar

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    Quote Originally Posted by Rich_S View Post
    I mean, people went fast with flat head fords too, but no one is going to seriously claim that valve in block is a good design for performance applications.
    You’re either back to trolling or don’t know a lot about making power in a useful and meaningful way, so I won’t respond anymore, beyond saying that the performance numbers have always spoken for themselves with the newest pushrod performance cars.

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    Registered Member NHRATA01's Avatar

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    Quote Originally Posted by Rich_S View Post
    I mean, people went fast with flat head fords too, but no one is going to seriously claim that valve in block is a good design for performance applications.
    Yeah we remember all those years of the mod motor just beating down LSs out of the box, to the point everyone started swapping them into Fbodies.

    There's a lot of inherent limitations of a flathead vs ohv setup. There's much fewer of an ohv vs ohc. About the only significant one tends to be rev limit due to the valvetraim, but most performance cars now are running turbos and rarely spinning past 6.5-7k anyway.

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    DANSBIRD's Avatar

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    Quote Originally Posted by NHRATA01 View Post
    Yeah we remember all those years of the mod motor just beating down LSs out of the box, to the point everyone started swapping them into Fbodies.

    There's a lot of inherent limitations of a flathead vs ohv setup. There's much fewer of an ohv vs ohc. About the only significant one tends to be rev limit due to the valvetraim, but most performance cars now are running turbos and rarely spinning past 6.5-7k anyway.
    He knows... Like I said, he's trolling. That or he's an idiot. I'll give him the benefit of the doubt and assume it's the former.

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    Registered Member zo6pilot's Avatar

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    Quote Originally Posted by DANSBIRD View Post
    He knows... Like I said, he's trolling. That or he's an idiot. I'll give him the benefit of the doubt and assume it's the former.
    You're a good man Dansbird

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    Registered Member Anthony's Avatar

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    I don’t want to be anywhere near this thread once windham declares Rich a troll.

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    Coastal Elite Crew Rich_S's Avatar

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    Quote Originally Posted by NHRATA01 View Post
    Yeah we remember all those years of the mod motor just beating down LSs out of the box, to the point everyone started swapping them into Fbodies.
    2V or 3V defeats the purpose of OHC. The 4Vs were better but just lacked the cubes. Whole different story once the Coyote came out.

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    underdog 4 lyfe ill deuce's Avatar

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    what held mod motors back were terrible intakes. you can't make power with a 281 at 5700 rpm.

    you can get enough cfm from even a 2v head to get close to 500hp but it needs 7500 rpm to do it.

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    Registered Member NHRATA01's Avatar

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    "Ford wanted the high rpm power of an overhead cam valvetrain and the low rpm torque of a long stroke, and in the end got neither"

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    underdog 4 lyfe ill deuce's Avatar

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    the 5.4 has a longer stroke than a 454. lol


    it's flathead v8 like under square.

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    Quote Originally Posted by NHRATA01 View Post
    "Ford wanted the high rpm power of an overhead cam valvetrain and the low rpm torque of a long stroke, and in the end got neither"
    In regards to the first 4.6?

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    Registered Member mogs01gt's Avatar

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    Uncle Tony

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    Registered Member mogs01gt's Avatar

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    damn this sucker makes some horsepower!

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    DANSBIRD's Avatar

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    With the GTR already being known as Godzilla, it's strange they wouldn't come up w/ a more original name.


    But that thing is making nice power. I'm anxious to see what people do w/ these.
    Last edited by DANSBIRD; 02-07-2020 at 01:54 AM.

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    GUESS WHAT MOTHERF***ER?! Gearhead SS's Avatar

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    Pretty impressive powerplant but Uncle Tony is right. They'll probably never make enough of these things to make a dent in the LS domination. LS's are just too plentiful and cheap.

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    Registered Member mogs01gt's Avatar

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    Quote Originally Posted by Gearhead SS View Post
    Pretty impressive powerplant but Uncle Tony is right. They'll probably never make enough of these things to make a dent in the LS domination. LS's are just too plentiful and cheap.
    I'd bet the 392 Hemi head still flows more.

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    Registered Member speed_demon24's Avatar

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    I don’t understand them trying to hype up this motor. It’s not like the ls stuff that was in millions of vehicles over 20 years and all interchangeable. And it’s heavy as hell. I don’t see a path where the aftermarket takes off for it.

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    Registered Member mogs01gt's Avatar

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    Quote Originally Posted by speed_demon24 View Post
    I don’t understand them trying to hype up this motor. It’s not like the ls stuff that was in millions of vehicles over 20 years and all interchangeable. And it’s heavy as hell. I don’t see a path where the aftermarket takes off for it.
    The weight does kill it

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    Quote Originally Posted by Gearhead SS View Post
    Pretty impressive powerplant but Uncle Tony is right. They'll probably never make enough of these things to make a dent in the LS domination. LS's are just too plentiful and cheap.
    Depends.
    It will be in a shitton of commercial vehicles, service trucks, step vans, ect.

    Obviously not as many as an LS since it was put in EVERYTHING, but I don't forsee a shortage of junkyard pullouts in 10-15yrs.

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    A mild cammed, and tuned one in a Fox, with a 10spd or t56 would be awesome,and likely last 300,000mi.

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    Quote Originally Posted by speed_demon24 View Post
    I don’t understand them trying to hype up this motor. It’s not like the ls stuff that was in millions of vehicles over 20 years and all interchangeable. And it’s heavy as hell. I don’t see a path where the aftermarket takes off for it.
    It's not that heavy, so much as the Coyote is super light.

    The appeal is the cubes, and the beefiness. Bottom end will handle 1,500hp in stock form, and they're just scratching the surface of what it will do.

    Few years, and I see them being a 650hp/600tq engine with HCI.

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    Registered Member speed_demon24's Avatar

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    Quote Originally Posted by No F-bdy Bs View Post
    It's not that heavy, so much as the Coyote is super light.

    The appeal is the cubes, and the beefiness. Bottom end will handle 1,500hp in stock form, and they're just scratching the surface of what it will do.

    Few years, and I see them being a 650hp/600tq engine with HCI.
    If you were an aftermarket company would you put a ton of time and $$ into R&D into an engine that is only available for HD trucks or commercial vehicles? You don't have new mustang or camaro/corvette owners willing to drop a ton of $$ modding their cars to get the platform off the ground. The only way to get one now would be to buy a crate engine from ford which makes no sense with the other options available.

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    Quote Originally Posted by speed_demon24 View Post
    If you were an aftermarket company would you put a ton of time and $$ into R&D into an engine that is only available for HD trucks or commercial vehicles? You don't have new mustang or camaro/corvette owners willing to drop a ton of $$ modding their cars to get the platform off the ground. The only way to get one now would be to buy a crate engine from ford which makes no sense with the other options available.
    Exactly. Ford's going to have to drop this in F150 or make it a cheap OTC crate motor to make it viable for broad aftermarket support.

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    Registered Member mogs01gt's Avatar

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    Quote Originally Posted by No F-bdy Bs View Post
    It's not that heavy, so much as the Coyote is super light.

    The appeal is the cubes, and the beefiness. Bottom end will handle 1,500hp in stock form, and they're just scratching the surface of what it will do.

    Few years, and I see them being a 650hp/600tq engine with HCI.
    Pistons are holding it back in stock form though with any power adder applied.

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    I'm not saying it will dethrone the Ls, but I do believe it will become a popular option.

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    Registered Member NHRATA01's Avatar

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    Why would it even be more popular than a coyote?

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    Quote Originally Posted by NHRATA01 View Post
    Why would it even be more popular than a coyote?
    I never said that.
    I'm not saying it's the next coming of Christ. Still, there are a LOT of hot rodders out there that appreciate a traditional v8, that has a strong base, and will fit in most engine bays without much fanfare.

    It's a big, beefy, pushrod v8,built modern. There will always be a market for that.
    Last edited by No F-bdy Bs; 02-07-2020 at 10:27 PM.

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    underdog 4 lyfe ill deuce's Avatar

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    it's also gonna be in like 25% of 3/4 and 1 ton fords. it's not gonna be rare by any stretch.

    it's got big block displacement and weighs less than an iron SBC...

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    Registered Member NHRATA01's Avatar

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    Quote Originally Posted by No F-bdy Bs View Post
    I never said that.
    I'm not saying it's the next coming of Christ. Still, there are a LOT of hot rodders out there that appreciate a traditional v8, that has a strong base, and will fit in most engine bays without much fanfare.

    It's a big, beefy, pushrod v8,built modern. There will always be a market for that.
    Quote Originally Posted by ill deuce View Post
    it's also gonna be in like 25% of 3/4 and 1 ton fords. it's not gonna be rare by any stretch.

    it's got big block displacement and weighs less than an iron SBC...
    Right but keep in mind part of what makes the LS so popular is the huge amount of aftermarket support.

    It will be in a lot of 3/4 and 1 ton trucks, and probably medium duty. But those aren't really segments where owners are modding. So what options realistically are you going to have for things like heads, cam, headers, or intake manifolds?

    The old 8.1/496 wasn't a good motor to mod even if the block was a MarkV BBC because there was almost no aftermarket support for the platform.

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    Quote Originally Posted by NHRATA01 View Post
    Why would it even be more popular than a coyote?
    i kind of think this too for many. the thing these days is to slap a turbo on everything, and i see coyote turbo kits advertising up to 1200hp. given that ford has been putting coyotes in f-150s forever, it wouldn't seem terribly expensive to get a coyote, slap turbos on it, make as much power as you want.

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    :flirt: SwollHottie's Avatar

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    Quote Originally Posted by NHRATA01 View Post
    Right but keep in mind part of what makes the LS so popular is the huge amount of aftermarket support.

    It will be in a lot of 3/4 and 1 ton trucks, and probably medium duty. But those aren't really segments where owners are modding. So what options realistically are you going to have for things like heads, cam, headers, or intake manifolds?

    The old 8.1/496 wasn't a good motor to mod even if the block was a MarkV BBC because there was almost no aftermarket support for the platform.
    lsx is popular due to being physically small, making big power with minor mods and stupid power with boost, aftermarket parts for everything, and being cheap to acquire because GM has been putting them in trucks forever.

    the aftermarket parts exist precisely because they're cheap to acquire.

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    Quote Originally Posted by NHRATA01 View Post
    Right but keep in mind part of what makes the LS so popular is the huge amount of aftermarket support.

    It will be in a lot of 3/4 and 1 ton trucks, and probably medium duty. But those aren't really segments where owners are modding. So what options realistically are you going to have for things like heads, cam, headers, or intake manifolds?

    The old 8.1/496 wasn't a good motor to mod even if the block was a MarkV BBC because there was almost no aftermarket support for the platform.
    No one is saying people will be modding trucks, or step vans (even though I do see people modding them in 3/4 ton trucks)


    I'm saying, as a stand alone, swap in engine is where it will shine. Look at the hype it's already generated. Quite a few places already have HC and Intakes for them.

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    underdog 4 lyfe ill deuce's Avatar

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    Quote Originally Posted by NHRATA01 View Post
    It will be in a lot of 3/4 and 1 ton trucks, and probably medium duty. But those aren't really segments where owners are modding. So what options realistically are you going to have for things like heads, cam, headers, or intake manifolds?

    The old 8.1/496 wasn't a good motor to mod even if the block was a MarkV BBC because there was almost no aftermarket support for the platform.
    the 6.0 was basically only in HD trucks but it was in them for years though.

    the 8.1 was weird because it took oddball parts that other big block parts wouldn't work on, head bolt pattern firing order etc.

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    underdog 4 lyfe ill deuce's Avatar

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    a low option reg cab 4x4 with 600hp and a smooth idle would be kinda hot...

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    DANSBIRD's Avatar

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    In terms of an F250, how competitive will the 7.3L be to the available diesel? I think back to the early 2000's when Ford put in the 5.4L & the 7.3L PS. Hopefully it won't be nearly the gap that the 5.4L was to the 7.3L powerstroke. The 5.4L was a complete dog compared to the PS.
    Last edited by DANSBIRD; 02-08-2020 at 12:56 AM.

  55. #55
    underdog 4 lyfe ill deuce's Avatar

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    diesels truck numbers are just pissing matches now. they have numbers and tow ratings to pull things you don't really have any business pulling with a pickup truck.

    the new 7.3 has 85-90% of it's tq by 2200 rpm. the rear wheel numbers are probably close to the original duramax but with way more hp when you get on it.

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    DANSBIRD's Avatar

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    Quote Originally Posted by ill deuce View Post
    diesels truck numbers are just pissing matches now. they have numbers and tow ratings to pull things you don't really have any business pulling with a pickup truck.
    ain't that the damn truth.

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    Registered Member mogs01gt's Avatar

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    Quote Originally Posted by DANSBIRD View Post
    In terms of an F250, how competitive will the 7.3L be to the available diesel? I think back to the early 2000's when Ford put in the 5.4L & the 7.3L PS. Hopefully it won't be nearly the gap that the 5.4L was to the 7.3L powerstroke. The 5.4L was a complete dog compared to the PS.
    But the diesels were like 30% more $$

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    Registered Member NHRATA01's Avatar

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    Quote Originally Posted by No F-bdy Bs View Post
    No one is saying people will be modding trucks, or step vans (even though I do see people modding them in 3/4 ton trucks)


    I'm saying, as a stand alone, swap in engine is where it will shine. Look at the hype it's already generated. Quite a few places already have HC and Intakes for them.
    Right, but I'm saying why would you swap in that engine if there is no tangible benefit over even a coyote, let alone an LS. Just because it's big cubes N/A?

    I haven't seen any heads/cam packages for the 7.3 gasser, only the old powerstroke, unless I'm missing something? I really doubt you're going to get an aftermarket company like AFR, Dart etc to spend the money to come up with an aftermarket head casting for this motor.

    I dunno is Ford racing using the motor for some application?

    I'm a big cube N/A guy, built a 454 cid LS, but to be honest there's really no reason for it other than to say you have a yuge CID motor. Boost will always win the $/hp war these days.

  59. #59
    I look reasonable, but I'm not. No F-bdy Bs's Avatar

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    Quote Originally Posted by DANSBIRD View Post
    In terms of an F250, how competitive will the 7.3L be to the available diesel? I think back to the early 2000's when Ford put in the 5.4L & the 7.3L PS. Hopefully it won't be nearly the gap that the 5.4L was to the 7.3L powerstroke. The 5.4L was a complete dog compared to the PS.
    It's not that it will compete with a modern diesel so much as there are a lot of people that want more than a 6.0, or 6.2 gasser, but do not need/want a diesel.

  60. #60
    Bugzapper gonna zap 5.0THIS's Avatar

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    Quote Originally Posted by No F-bdy Bs View Post
    I never said that.
    I'm not saying it's the next coming of Christ. Still, there are a LOT of hot rodders out there that appreciate a traditional v8, that has a strong base, and will fit in most engine bays without much fanfare.

    It's a big, beefy, pushrod v8,built modern. There will always be a market for that.
    Yeah, there is a market for that. And GM has it cornered. Take a hike ford.

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