Who will swap for the new 7.3 V8!

[engineermike]

...As for 3,500 I’ll take what I get cause it’s better than 4500-6500. The way I drive anyway.

So the 6.2 2-valve truck motor turns on at 3500 but the torque peak isn’t until 4500 and power at 5500. And that’s the truck motor.

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[Fatguy]

So the 6.2 2-valve truck motor turns on at 3500 but the torque peak isn’t until 4500. And that’s the truck motor.

I’ll take what I can get cause that’s all there is.

 

[engineermike]

I’ll take what I can get cause that’s all there is.

So you’re buying a 5.0 then?

 

[Fatguy]

So you’re buying a 5.0 then?

I have no say in what the 7.3 specs will be but It’s basically all there is so you will just have to work with that. I drove Mustangs with that black and chrome 5.0 on the fenders and while the paint and chrome surprisingly did not wear off, I’m ready for some 7.3 badges. As petty as that is. The 5.0 is so “meh” to me and I want a big block!

I don’t care about updates -18 years of 5.0 is enough. I’ve done my time. Time for big block!

 

[Kirgiz]

Ford designed the engine for TRUCKS. Light Duty trucks make very good advantage of cylinder deactivation, because the amount of time they need all 8 cylinders is minimal. Heavy Duty trucks (like the ones Ford designed the 7.3L for) spend more of their operating time at load, thus no cylinder deac. Should also note that Direct Injection DOES NOT reduce particulate emissions.........it CAUSES them. This is why the next emissions tech coming to DI gas engines will be GPFs....gas particulate filters.

Mustang already has GPF in Europe.

 

[Fatguy]

And for my fellow V6 guys let me say that buying the V6 was a refreshing change! Over 3 decades of small block V8 is enough!

The V6 has its own charm - believe it - and so far has been more reliable than all - and I repeat “ALL” of my V8s from 302s to 2 5.0s and one LT1. The first thing I noticed was how much better the steering was and then how much better the handling was. Better than the current V8s dare I say....

Beaten several Porsche’s with the handling of this car - and yea it’s true...


I just had to get that out there...

 

[CrashOverride]

This one's gonna be 521" when it goes together for good. It's big, dumb, and (relatively) cheap too. Not sure I'd want it in my '15 though.

Giggity.

What are you putting that in? Cobra Replica? Every engine has a useful home!

As far as the 8.1. Have one in a 3/4 ton truck at work. It's great and terrible in the same way. Torque is great off idle (Should be for a 3/4 ton) but as everyone else has said, it falls flat on it's face about 4000. But... It gets 7mpg around the city, and burns oil like a 2 stroke...But most of the GM big blocks I've known burn a little oil - that's just how they are. I hear they are great marine engines - but, you actually want weight in the rear of the boat and you can cam it for high RPM's since a boat is usually using the upper third of the engine RPM's. A car? It needs the whole range, hence the transmission.

 

[CrashOverride]

Mustang already has GPF in Europe.

I'm getting way off track here, but the particle size is way smaller for gas DI engines over diesel DI engines -- it's why you can't see the soot coming from a gas DI engine tailpipe (Yet the carbon mysteriously appears on the tips). Smaller particles are far worse than large ones because they lodge much deeper into the lungs...

I thought I read a thread on here about DPF's from some guys across the pond. I'm not aware of any US car that has them, but I could most definitely be wrong.

Does the GT have a GPF? Curious if the PFI/DFI combo works good enough to evade the GPF use. I could see a DFI-only car needing one though.

 

[Strokerswild]

What are you putting that in? Cobra Replica? Every engine has a useful home!

It originally WAS going to go into a Cobra replica. It's going into a 1970 Fairlane.

 

[Kirgiz]

Does the GT have a GPF? Curious if the PFI/DFI combo works good enough to evade the GPF use. I could see a DFI-only car needing one though.

Yes, it has in Europe. Steals 10 HP.

 

[gixxersixxerman]

Lol, yolo said stop being gullible

 

[Fatguy]

Lol, yolo said stop being gullible

I’ll look at it later but the fact he is talking about it legitimizes the interest in it.

 

[CrashOverride]

I agree with most of the stuff on the video except that it is not completely known about the direction of Chevy V-8's. There are lots of rumors that revolve around the C8, but other than the Caddy 5.5L engine, they appear to be moving full-pushrod-ahead. Not that that's bad, the LS is an awesome engine for what it is - but it's different and fairly low tech. Again, there are dozens of ways to compare engines here, the LS is without a doubt a smaller packaged engine, and it might weigh less - not sure on that one.

The other thing is that OHC doesn't make less torque than OHV. I really cringe when I hear that repeated. It's all about the valve lift. Crappier flow = more torque at low RPM's. It keeps the velocity high and makes the mixture tumble more. If you took a cheapo 2V head, and put a pathetically small cam in it, along with a pathetically small set of valves, it would do the exact same thing as a truck LS engine. Lift is lift, and the piston doesn't care if it was a cam bucket, or a pushrod that made it open. There is a geometry change of the port because of the difference, but it's my experience the OHC has a better path into the cylinder. The only thing the SOHC has against it is the extra cam and the friction associated with it.

But, SOHC is more expensive, and yeah, for a medium-duty vehicle in mind, nobody is going to care. Actually they will care, they will be glad that replacement parts are cheap.

 

[jake_zx2]

You guys harp CONSTANTLY on Camaros and Corvettes about big displacement and how they make no power for the cubes and now look at all of you. I'm not for or against OHV vs OHC. But if someone wanted pushrods with big cubes, there are offerings already available that have high performance in mind.

Why is it all of a sudden a big truck engine with pushrods is getting everyone excited when Ford Performance has had EVEN BIGGER DISPLACEMENT pushrod engines available for a long time now? I'm genuinely confused. Someone explain please, I'm asking a legitimate question...

I don't think a "you guys" message is necessary here. This thread is pretty much mustang6g vs the idiotic fatguy.

Fatguy is the epitome of why "any publicity is good publicity"... he literally hears "7.3 truck engine" and "mustang" in the same sentence and blows yep about how "PEOPLE ARE TALKING ABOUT IT SO FORD SHOULD MAKE IT" even though the only time they're really used in a sentence together is while saying "the 7.3 truck engine SHOULD NOT be swapped into a Mustang because it's a stupid fucking idea"

 

[engineermike]

I have no say in what the 7.3 specs will be but It’s basically all there is so you will just have to work with that....I’ll take what I can get cause that’s all there is.

I think it’s funny that you went on ad nauseum about how great the low end torque would be. Then when I pointed out that it might actually be kinda soggy on bottom, suddenly you’re ok with whatever torque curve it has as long as the displacement is 7.3 liters.

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