FORD`s super secret Megazilla V8

[Dirtman]

I think the main question on everyone's mind is...

Does it is goes vroom?

 

[19Walt93]

OHC allows them to build better intake and exhaust ports at the same time they're reducing the weight of the valve train, less weight, less drag, and lighter springs add up to less parasitic drag. BUT, the huge heads make the engine wider. The 7.3 gas will fit where a modular engine would not. The modular engines were pretty trouble free overall, the 99 5.4's had head gasket oil leaks because Jack Nasser squeezed the supplier to make them cheaper. The worst problem with the V10 was caused in the sales department, the engine needs to rev to build power and the morons would order 3.73's behind them.

 

[rusty ol ranger]

I was going to make a point about it probably having lower maintenance cost then an ohc engine.


Then I looked at the oil capacity. Thing takes 8qts. What in the Sam Hill.

@rusty ol ranger how much oil you put in that 460 5 maybe 6qts?

6 qts in the 460.

But it also doesnt need stupid amounts of RPM to get shit done.

 

[Dirtman]

The worst problem with the V10 was caused in the sales department, the engine needs to rev to build power and the morons would order 3.73's behind them.

Mine also liked to launch spark plugs. it was like the damn thing was allergic to them....

And, as well as using the wrong gears. They never got the automatics that were behind them tuned properly. They shifted WAY too early. Reminded me of driving a 3.0 vulcan with an automatic. You'd be 1,000 rpm shy of the powerband and it would shift...

 

[JohnnyO]

OHC allows them to build better intake and exhaust ports at the same time they're reducing the weight of the valve train, less weight, less drag, and lighter springs add up to less parasitic drag. BUT, the huge heads make the engine wider. The 7.3 gas will fit where a modular engine would not. The modular engines were pretty trouble free overall, the 99 5.4's had head gasket oil leaks because Jack Nasser squeezed the supplier to make them cheaper. The worst problem with the V10 was caused in the sales department, the engine needs to rev to build power and the morons would order 3.73's behind them.

OHC's need to spin to make power. Pushrod engines make more power down low.

 

[Dirtman]

Well pushrods have limits. Heavy valve springs bend pushrods, and light valve springs cause valve float at higher RPMs so your kinda stuck with how much you can rev a factory pushrod engine. Not that you can't build a pushrod motor for high RPMs but they are usually not made for that from the factory where most dohc engines can rev their brains out in stock form with no problem.

 

[don4331]

OHC allows them to build better intake and exhaust ports at the same time they're reducing the weight of the valve train, less weight, less drag, and lighter springs add up to less parasitic drag. BUT, the huge heads make the engine wider.

OHC's need to spin to make power. Pushrod engines make more power down low.

OHC can spin higher as they have less valve train weight. As power = torque * rpm, they can make more power. The 4.0 SOHC isn't significantly wider than the 4.0 OHV

OHV engines can be made to make power high, it just becomes expensive to manufacture them. Hemi head OHV engines aren't narrow; the prototype 4V OHV heads for the SBF resulted in an engine almost as wide as the modular.

 

[Roert42]

6 qts in the 460.

But it also doesnt need stupid amounts of RPM to get shit done.

A 7.3 is 445 cubes. So why the does it take 8qts.

normally OHC engines have higher oil capacity. (4.6 takes 6qts)

There goes your savings. a diesel is still way more, but come on.

 

[85_Ranger4x4]

A 7.3 is 445 cubes. So why the does it take 8qts.

normally OHC engines have higher oil capacity. (4.6 takes 6qts)

There goes your savings. a diesel is still way more, but come on.

Duty cycle. She's built to run hard.

Heavy duty engines benefit from having more oil to heat up, contaminate and break down.

Most tractor engines of respectable size gas or diesel start at 5gal.

 

[Bossman]

Edit: Need further research

 

[rusty ol ranger]

A 7.3 is 445 cubes. So why the does it take 8qts.

normally OHC engines have higher oil capacity. (4.6 takes 6qts)

There goes your savings. a diesel is still way more, but come on.

An older 7.3psd holds 10qts IIRC, plus the filters are much more expensive. The new diesels probable more so.

The 4.6 holdin 6qts isnt out of line. The 300/302/351MW(and probablyC)/400/429/460 all held 6 qts.

Not sure about the FE's but probably 6 as well. 6 is pretty standard for Ford fullsize gassers.

 

[stmitch]

A 7.3 is 445 cubes. So why the does it take 8qts.

normally OHC engines have higher oil capacity. (4.6 takes 6qts)

There goes your savings. a diesel is still way more, but come on.

It's an engine for work trucks. They gave it more oil capacity to keep it cool while working. More oil capacity may also mean it can go longer between oil changes. Either way, it's a feature, not a bug.

"Car guys" are excited about this engine because it's got potential for big power pretty easily, like an oversized LS. But the target customer for this engine from Ford's perspective are fleets that don't want to pay more for a diesel or can't deal with the emissions hassles on a modern diesel. It's got a pretty flat, diesel-like torque curve:

So, this engine is compact, simple (no expensive direct injection or turbochargers), and designed to work hard for a long time without being stressed to the limit. The entire idea is to get work done without breaking or shutting down for maintenance.

 

[Ramcharger90]

That new 7.3L is 430 hp.
The latest 3.5L EcoBoost is 400 hp.

The 3.5L can make big numbers, but they usually involve larger turbos and a new intercooler.

If you were limited strictly to a tuner, which motor could make the most horsepower?

I like the efficiency of the 3.5L, but I'm probably not going to like it if I ever have to replace a turbo.

Why not put a turbo on the 7.3? Or two of them.....

 

[Ramcharger90]

Im would buy the 7.3 crate motor to put in something. I replaced the number 2 injector the other day on a 2011 f150 3.5 EcoBoost. I cant believe the racket made by the direct injection system. Its louder than the motor itself..... but I daily drive a cammed 5.0 ranger sooooo im totally bias



I could see the point of I want good gas mileage in my 98 and the 3.0 took a dump so ill put a EcoBoost in it instead of a 5.0 depending on your home state.

 

[rusty ol ranger]

It's an engine for work trucks. They gave it more oil capacity to keep it cool while working. More oil capacity may also mean it can go longer between oil changes. Either way, it's a feature, not a bug.

"Car guys" are excited about this engine because it's got potential for big power pretty easily, like an oversized LS. But the target customer for this engine from Ford's perspective are fleets that don't want to pay more for a diesel or can't deal with the emissions hassles on a modern diesel. It's got a pretty flat, diesel-like torque curve:

So, this engine is compact, simple (no expensive direct injection or turbochargers), and designed to work hard for a long time without being stressed to the limit. The entire idea is to get work done without breaking or shutting down for maintenance.

I think theres been a whole in the market ever since GM killed the 8.1.

Ever since the mid-late 90s when the 454/460 got killed because of emissions diesel was really the only way to go. Sure ford had the V10 but at the time it was new untested tech and diesel fuel was cheap and there was basically zero emissions regulation on diesel.

Once diesels became saddled with unreliable emission equipment, expensive parts, etc etc alot of people who needed power but wasnt gonna tow like a semi (IE. The vast majority of 3/4-1ton customers) were screwed. You had your choice between high revving glorified small blocks or cough up the money for a diesel.

Engines like the godzilla fill a large void for people like construction workers, who may need to haul 10-11k lbs of building material but just across town....or the snowplow operator who dont wanna deal with the diesel in the cold bullshit, or the fleet guys who need more oomph then a 6.2 but wanna avoid the ovrrall diesel expense.

I for one think its the best thing ford has done engine wise in many years