I saw a posting in another thread that indicated a n/a 7.3 is a better performer than a Cummins turbo. Anybody know about this comparison? Fuel mileage, hp, torque?

 

sounds like a whacko ford nut to me. a cummins will out do a 7.3 powerstroke turbo on HP and TQ. I don't know about the gas mileage, but going from a small straight six to a huge v8, I'd doubt the 7.3 would win.

 

See this thread:

https://www.ford-trucks.com/dcforum/...mID20/138.html

 

The Cummins that was out at the same time as the N/A Powerstroke wasn't rated very high. However, the Cummins is capable of so much more than they are rated at. Did anyone see the article where the Cummins propelled a Dodge Dakota to over 200 mph with minor mods? That 5.9 Cummins is a beast.

 

I guess if you consider the cost of R and D that went into those upgrades by Banks engineering. Even if it was off the shelf stuff it would have been 7 grand + worth of add-ons.....more than my whole truck

 

well to get 400hp I spent 1grand. for me to go higher I will have to spend about 800 more for a new turbo and I can mod my fuel plate myself to get more fuel or buy a new plate for 100 bucks. after this turbo all I have do to get 600 is a clutch and more fuel mode which will be free or O could trade my fuel plate in for a different one. After 600 hp you are looking at a different turbo again and a oringed head which all together will run you 2 grand in which you will be good for about 800hp when the block will have to be o-ringed also because you will be around 100psi of boost. o-ringed head is good to 80psi with stock head gasket ahs just o-ringed head. Now after 1000hp you will really have to spend some bucks. all in all I think to get a truck like dave mitchel it costs 28grand but that gives you 1200plus hp which is on #2 only. These prices are close if not dead on. considering what brand of parts you buy andwho you get them from.

even with 400hp I still can get 20-22 mpg on the road and 16-18 in the city depending on how I driver it. Stock I only got 20 on the road and a solid 16 in the city. 15-17pulling depending on the load.

 

The motor that was delivered by cummins to banks made just under 400hp. They had to mod it out to 745 to get what they wanted.

To be honest is there a 745hp(flywheel) isbe out there besides banks. On # 2 alone. I think quadzilla is pushin just shy of 600 at the wheels. Even with 20% est. drivetrain losses. Banks is still the king of the hill.

 

F350flatbed, I guess that nobody read the topic of you post.
I would say that the original cummins vs. a n/a 7.3 was pretty close. From what I saw at truck pulls anyway, the n/a 7.3 was a stout competitor until cummins worked on their motors and Ford introduced the PSD. A my brother was getting about 17-18 mpg with his '89 7.3. Then he put a banks sidewinder on it, and nothing was close to it. Until the PSD came out. At the truck pulls, all of the cummins guys were b!tchin because he had an aftermarket turbo. Truth was that he was making less boost than they were, and he still kicked there butts.

 

There are getting to be several 750+ at the flywheel. Most don't even mention flywheel horsepower anymore because it's rear wheel that counts-------700+ rear wheel horsepower
andy

 

If you think about pulling anything, half is motor, half is GEARING. Something to think about when pushing hp and torque numbers, if the Ford has more "gearing" (higher rpm for the same speed) then it will obviously pull a load better.

 

Not if the RPM is way out of the performance range of the engine. The dodge trucks I have seen pull have run 4.10 and 3.54 gears and seem to do about the same. No big difference. I would think that yes a lower gear would pull better when pulling a trailer or drag.
Dm01

 

Now exactly how RELIABLE will these high horsepower diesels be? How long would they last with that kind of power before something breaks? Every engine has its limits. That's why you don't see little Cummins in big locomotives and tractors. They use Cats and Detroits as well as GE's diesels and I think if I remember correctly, a John Deere in one.

Well, since we're into comparing how about this? A Cat 7.2L 3126B Truck engine that peaks torque at 1440 rpm with a torque range from 420-860 lb-ft. and can have up to 300hp vs. the Cummins ISB, I mean they are in the same class of engines. Imagine if these were in the F-350's.

 

Don't know how long they will last but I have 80k one a 400hp Cummins. 130k in all but I did not have it turned up until 97 and I bought it in 96. its a 94 model truck.

 

I hear of 600 or 700 hp with 200 thousand on em. I wouldnt expect more than 250k.

 

I have heard of cummins powered tractors. Highest output is 660 lb ft. Not big enough for a lot of jobs.