What are the differences in 7.3PS?
Thread Starter
|
Freshman User
Joined: Feb 2007
Posts: 43
Likes: 0
What are the differences in 7.3PS?
Hi Everyone,
Im new to the forum and the power stroke motors. Im trying to do my homework and im researching to learn more about these cool powerplants.
This forum is a cool resource though i havent really scratched the surface yet.
I'm trying to learn the major differences between the 94-98 7.3 and the 99-03 7.3. Im curious to the differences in the power they produce and why. As well any opinions you all have since your driving them.
Thanks everyone!
Gordon
Im new to the forum and the power stroke motors. Im trying to do my homework and im researching to learn more about these cool powerplants.
This forum is a cool resource though i havent really scratched the surface yet.
I'm trying to learn the major differences between the 94-98 7.3 and the 99-03 7.3. Im curious to the differences in the power they produce and why. As well any opinions you all have since your driving them.
Thanks everyone!
Gordon
Senior User
Joined: Aug 2004
Posts: 352
Likes: 0
From: Racine Wi
Basicly the same engine, just differences in bolt ons and controls. The early models have smaller injectors, smaller turbo, no inner cooler, and less HP tuned into them. They are just as dependable though and can make the same HP as the later models, it just costs more for the additional mods. Someone with more knowledge than I will add to the list of differences. There is also subtile differences in the transmissions. They are basicly the same, just more refined as you get newer.
Postmaster
Joined: Jul 2006
Posts: 4,993
Likes: 2
From: Bend, OR
There is the OBS Powerstroke...94-97, no intercooler, 90cc injectors, 15 degree HPOP (Hi pressure oil pump), smaller turbo, and a E4od tranny in the autos and a 5 speed man. Stock form about 190 to the rear wheels
The early 99 trucks, intercooled, small turbo (bigger then the OBS but) 120cc injectors, and most had the smaller 15 hpop, 4r100 auto tranny and a 6 speed man... about 220 to the rear wheels stock...
Late 99 to 03 trucks, 140cc injectors, bigger turbo but it likes to surge, 17 degree HPOP... about 220 to the rear wheel stock...
The early 99 trucks, intercooled, small turbo (bigger then the OBS but) 120cc injectors, and most had the smaller 15 hpop, 4r100 auto tranny and a 6 speed man... about 220 to the rear wheels stock...
Late 99 to 03 trucks, 140cc injectors, bigger turbo but it likes to surge, 17 degree HPOP... about 220 to the rear wheel stock...
Post Fiend
Joined: Sep 2006
Posts: 5,584
Likes: 0
From: Millbrook Alabama
Originally Posted by Supergordo
Thanks guys! Are the turbos and injectors and all that stuff interchangeable? Can you upgrade the engine for more power if you want?
Upgrading a 7.3 PSD is not a quick and easy process, it takes time, and patience, and then after you upgrade it there is still a good chance that a 6.0 will beat you in a drag race but can he do it after he has 200k miles on his truck.
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
Trending Topics
Thread Starter
|
Freshman User
Joined: Feb 2007
Posts: 43
Likes: 0
Originally Posted by aklim
Late 01 they changed to Powdered Metal Rods because they were too cheap.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
Originally Posted by Supergordo
So would you say you prefer the eariler PS?
Here is how to check.
I think that link is down for now. Will see if it is back later. Do a search for Powdered Metal Rods and you will be told
Last edited by aklim; Feb 9, 2007 at 10:39 PM.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
For all the PMR talk here, 400 is a lot of ponies. I would venture a bet that despite all the hullabaloo about it here, about 90% or better here are nowhere near the 400hp mark. Think that over. A 350+ hp rig will make gobs of torque and with the proper tranny mods will satisfy all but the most hard core folks.
The 6.0 has become an impressive powerplant but resides in a more expensive truck and is close to maxed out from the plant. It responds well to light mods but because it is about maxed out by design, it will experience longevity issues when modded. JMO. BTW, it is being replaced. It's all about emissions.
I would stay away from the earlier 7.3s if you want to get up and go, but if you want to pull the load they are still doing it quite well. I see them all the time. Great engine that 7.3.
The 6.0 has become an impressive powerplant but resides in a more expensive truck and is close to maxed out from the plant. It responds well to light mods but because it is about maxed out by design, it will experience longevity issues when modded. JMO. BTW, it is being replaced. It's all about emissions.
I would stay away from the earlier 7.3s if you want to get up and go, but if you want to pull the load they are still doing it quite well. I see them all the time. Great engine that 7.3.
Postmaster
Joined: Jul 2006
Posts: 4,993
Likes: 2
From: Bend, OR
Originally Posted by aklim
Late 01 they changed to Powdered Metal Rods because they were too cheap.
There mistake (Fords) was in not redoing the tooling when they made the switch. You have to add matterial and can remove matterial in a PMR type casting...
And as the above poster said, it takes ALOT to get to 400hp... With everything I have done I am just over 400hp...
Post Fiend
Joined: Jul 2005
Posts: 14,582
Likes: 12
From: 21791
Originally Posted by mrfixit64857
The new 6.4s are said to be VERY resistant to mods, with interlocks and flash programming codependent... be interesting to see how this develops!
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
Originally Posted by CSIPSD
Get your facts straight... Ford did not change to PMR's due to cost. It was to lighten the rotating mass and quiet the motor... There is nothing wrong with PMR rods. There in the 6.0 and holding over 700hp...
There mistake (Fords) was in not redoing the tooling when they made the switch. You have to add matterial and can remove matterial in a PMR type casting...
And as the above poster said, it takes ALOT to get to 400hp... With everything I have done I am just over 400hp...
There mistake (Fords) was in not redoing the tooling when they made the switch. You have to add matterial and can remove matterial in a PMR type casting...
And as the above poster said, it takes ALOT to get to 400hp... With everything I have done I am just over 400hp...