6.7 Spotted Undergoing Testing.
Posting Guru
Joined: Jul 2006
Posts: 1,288
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From: Leamington, Ontario
In my opinion Ford has made a giant mistake dropping navistar. Now we may end up with years and years of diesel engine problems because ford is just now making its own diesels for this application, yes i know that they produce other size diesels, but hasnt it been proven that the only reason that the 6.0 had trouble was because ford refused to use the electronic specifications Navistar recomended. now im a ford fan and an IH fan and it just breaks my heart that we are loosing the best combination of diesel truck/engine suppliers
--just my two cents.
--just my two cents.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Kind of interesting isn't it. Ford can tune a Navistar engine for performance modifications, but Ford won't allow their customers to tune the Ford product.
Posting Guru
Joined: Jun 2006
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Much as the Cummins and Dodge arrangement, Fords 7.3 - 6.0 power ratings were promoted on Navistars own website through the end of 6.0 production, so doubtful anything there was without approval.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Neither Ford or Navistar want the bill for problems caused by unauthorized modifications to their products.
Much as the Cummins and Dodge arrangement, Fords 7.3 - 6.0 power ratings were promoted on Navistars own website through the end of 6.0 production, so doubtful anything there was without approval.
Much as the Cummins and Dodge arrangement, Fords 7.3 - 6.0 power ratings were promoted on Navistars own website through the end of 6.0 production, so doubtful anything there was without approval.
Maybe I'm wrong. Wouldn't be the first time.
Posting Guru
Joined: Jun 2006
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Whose to say Navistar didn't design them for the Ford light truck ratings and "turn them down" for the medium truck market?
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Well that sounds bass akwards, which means it very well may be true. I never though about it from that angle.
Senior User
Joined: Nov 2003
Posts: 371
Likes: 0
From: Iowa
I wish Ford would offer two engine brands. International and Cat. Ford is making a big mistake if they do drop Navistar. The 6.0 is a durable engine with crappy electronics. They need to just settle this problem and just move on.
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Logistics Pro
Joined: Sep 2006
Posts: 4,863
Likes: 4
From: Airdrie Alberta
its not the electronics, its the failed head gaskets due to weak head bolts and being short changed on head bolts too, that to me is the biggest problem and is not because of Ford, thats all Navistar since they designed the motor.
Lead Driver
Joined: May 2007
Posts: 8,608
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From: Belair md
they do, you just have to buy a 650 to get a cummins, cat, or international
Lead Driver
Joined: Jan 2006
Posts: 6,267
Likes: 5
Why does everyone think a cat engine would be the bomb?????
You take a cat engine, build up your front suspension to hold it, then add a new PCM to rev it higher for the 4/5 spd tranny, THEN, see how reliable it is.
The 7.3 and 6.0 were both successful for international in larger trucks than the f-series.
What happens if you'd tune a ferrari engine to run low RPM's for more tourque????
Ford tunes the international into a "powerstroke" engine, higher tourque band to help the tranny stay together, and a wider power band to help the truck power through all the gears nicely.
You take a cat engine, build up your front suspension to hold it, then add a new PCM to rev it higher for the 4/5 spd tranny, THEN, see how reliable it is.
The 7.3 and 6.0 were both successful for international in larger trucks than the f-series.
What happens if you'd tune a ferrari engine to run low RPM's for more tourque????
Ford tunes the international into a "powerstroke" engine, higher tourque band to help the tranny stay together, and a wider power band to help the truck power through all the gears nicely.
Lead Driver
Joined: Jul 2007
Posts: 7,868
Likes: 9
From: Rhode Island
I was looking at internationals site the other day, their version of the 6.4 makes significantly less power then the 6.4 PSD.
They come in a few varieties from 200 - 230 HP and 560-620 ft-lbs of torque. They only have a torque/power curve chart for the low end one, its quite a bit different then the PSD power band, thats for sure.
It makes peak torque at 560 ft-lbs @ 1400 RPM, then its perfectly flat till around 1680 RPM then nose dives off and starts dropping very fast, ending with 350 ft-lbs @ 2800 RPM
Peak HP is 200 HP reached at 2200 RPMs, then its perfectly flat all the way to 2600 RPM, then drops down to around 175-180HP @ 2840 RPM
Just going by how the torque and power curves each have this spot that is perfectly flat suggests the engines are artificially limited.
They come in a few varieties from 200 - 230 HP and 560-620 ft-lbs of torque. They only have a torque/power curve chart for the low end one, its quite a bit different then the PSD power band, thats for sure.
It makes peak torque at 560 ft-lbs @ 1400 RPM, then its perfectly flat till around 1680 RPM then nose dives off and starts dropping very fast, ending with 350 ft-lbs @ 2800 RPM
Peak HP is 200 HP reached at 2200 RPMs, then its perfectly flat all the way to 2600 RPM, then drops down to around 175-180HP @ 2840 RPM
Just going by how the torque and power curves each have this spot that is perfectly flat suggests the engines are artificially limited.
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
If they did that, do you really think they would sell any V-8's?
Lead Driver
Joined: Jan 2006
Posts: 6,267
Likes: 5
I think they would, people love v8 diesels. Among us, there are a few fans of I6's, but not passionate enough to buy a dodge......
v8's are more refined and plus the way people think, 8 is better than 6. If there was a v10, people would buy that too IMHO.....
v8's are more refined and plus the way people think, 8 is better than 6. If there was a v10, people would buy that too IMHO.....