"Godzilla" Ford V 8

valhalla360 wrote:

Grit dog wrote:

valhalla360 wrote:
Realistically, how many people drop $70-90k on a truck and go around with it floored at 5,500rpm with a heavy load.

More than just in a stoplight race or a burnout?
Only those that bought a 7.3 gasser to haul their 14k 5ver anywhere in the mountains, because "a diesel is too expensive and unreliable."

LOL

Show me a burnout/drag race where they can get the 7.3 engine up to 5,500rpm with heavy torque to max out the HP.

Yeah, you might be able to force it into a low gear and get up to 5,500rpm but the torque will be way below max available at that rpm. By the time you get up into the higher gears it's tough to get the rpm up that high without hitting max speeds due to wind resistance.

Reality is very few engines will ever develop the max rated HP and most owners don't want to thrash a very expensive new truck, so it's mostly about bragging rights.

I've taken 3 different GM 2500's with the 6.0 up into 5500 territory regularly in the PA/WV/VA/NC mountains pulling a heavy load, and never hurt any of them. The tachs went to 6000 in each. Let them run up into the 5's when descending in low gears also.

Grit dog wrote:

valhalla360 wrote:
Realistically, how many people drop $70-90k on a truck and go around with it floored at 5,500rpm with a heavy load.

More than just in a stoplight race or a burnout?
Only those that bought a 7.3 gasser to haul their 14k 5ver anywhere in the mountains, because "a diesel is too expensive and unreliable."

LOL

Show me a burnout/drag race where they can get the 7.3 engine up to 5,500rpm with heavy torque to max out the HP.

Yeah, you might be able to force it into a low gear and get up to 5,500rpm but the torque will be way below max available at that rpm. By the time you get up into the higher gears it's tough to get the rpm up that high without hitting max speeds due to wind resistance.

Reality is very few engines will ever develop the max rated HP and most owners don't want to thrash a very expensive new truck, so it's mostly about bragging rights.

DaButcher wrote:
Just in case the standard RV horsepower of the Godzilla engines isn't enough add a couple turbos to get 1100+ HP.

Twin-Turbo Ford 7.3L Godzilla V8 Pumps Out 1,100 Horsepower

“Hey honey, I think it’s time I traded in my old work truck, I’m just going to run down to the Ford store for a bit …… “

Just in case the standard RV horsepower of the Godzilla engines isn't enough add a couple turbos to get 1100+ HP.

Twin-Turbo Ford 7.3L Godzilla V8 Pumps Out 1,100 Horsepower

pnichols wrote:

bobndot wrote:
I guess the idea was for the rv engine to get better mpg's.....???
bc it's operating at lower rpms where its tuned to get peak HP and torque at a lower rpm ,
where the fuel injection settings are tuned at peak.

Super Duty chassis with the 7.3 engine is tuned to produce 430 hp at 5,500 rpm. The Premium RV 7.3 is tuned to produce 350 hp at 3,750 rpm.
I think its better suited for the rv which is always hauling its weight where a P/u is not. To have power early on , lower rpm's, is a benefit in an rv.

Hmmm ... other than in drag, or closed course, racing ... what pickup driver (or RV driver) revs their 7.3 V8 to 5,500 rpm?

I'm guessing that the "RV tuned version" of the 7.3 V8 would probably be putting out close to 430 hp too ... at 5,500 rpm.

Granted, more than one person has said I’m not normal, but as a pilot WOT is a pretty normal thing so my 6.3 V8 sees its 6,800 rpm limiter on a pretty regular basis in daily driving.

valhalla360 wrote:
Realistically, how many people drop $70-90k on a truck and go around with it floored at 5,500rpm with a heavy load.

More than just in a stoplight race or a burnout?
Only those that bought a 7.3 gasser to haul their 14k 5ver anywhere in the mountains, because "a diesel is too expensive and unreliable."

LOL

With private sales, bragging rights sell, so Ford wants to show the biggest numbers reasonably possible. Realistically, how many people drop $70-90k on a truck and go around with it floored at 5,500rpm with a heavy load.

For fleet sales, detuning it a bit for more long term durability is a selling point. If they really need 400+hp, they are likely moving up to something heavier duty with a diesel. Also, keep in mind, the driver has no skin in the game, so it's desirable to have the engine protect itself from an idiot driver.

MH's happen to use a commercial chassis, so they aren't going to uprate them just for that use.

pnichols wrote:

bobndot wrote:
I guess the idea was for the rv engine to get better mpg's.....???
bc it's operating at lower rpms where its tuned to get peak HP and torque at a lower rpm ,
where the fuel injection settings are tuned at peak.

Super Duty chassis with the 7.3 engine is tuned to produce 430 hp at 5,500 rpm. The Premium RV 7.3 is tuned to produce 350 hp at 3,750 rpm.
I think its better suited for the rv which is always hauling its weight where a P/u is not. To have power early on , lower rpm's, is a benefit in an rv.

Hmmm ... other than in drag, or closed course, racing ... what pickup driver (or RV driver) revs their 7.3 V8 to 5,500 rpm?

I'm guessing that the "RV tuned version" of the 7.3 V8 would probably be putting out close to 430 hp too ... at 5,500 rpm.

This is the point I was trying to make. It's just rated at a different RPM. That doesn't mean it's detuned.

bobndot wrote:
I guess the idea was for the rv engine to get better mpg's.....???
bc it's operating at lower rpms where its tuned to get peak HP and torque at a lower rpm ,
where the fuel injection settings are tuned at peak.

Super Duty chassis with the 7.3 engine is tuned to produce 430 hp at 5,500 rpm. The Premium RV 7.3 is tuned to produce 350 hp at 3,750 rpm.
I think its better suited for the rv which is always hauling its weight where a P/u is not. To have power early on , lower rpm's, is a benefit in an rv.

Hmmm ... other than in drag, or closed course, racing ... what pickup driver (or RV driver) revs their 7.3 V8 to 5,500 rpm?

I'm guessing that the "RV tuned version" of the 7.3 V8 would probably be putting out close to 430 hp too ... at 5,500 rpm.

From what I understand it has to do with how horsepower is rated in the commercial chassis over 14K GVWR. I looked on Ford's website, and all of the cab and chassis F series, even the F350, had 7.3 ratings of 335-350 hp. Interestingly, there were 2WD F350s listed with GVWRs of upwards of 16K. Maybe someone more knowledgeable will chime in, but I seem to remember the real-world output of the engines in the commercial chassis is the same as the consumer-marketed pickups, the only difference is due to how the engines are rated.