Notices
1999 - 2003 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by: DP Tuner

Opening it up...

Thread Tools
 
Search this Thread
 
Old Apr 18, 2008 | 09:17 PM
  #1  
jefftb's Avatar
jefftb
Thread Starter
|
Senior User
Joined: Feb 2007
Posts: 195
Likes: 0
From: East Tennessee
Opening it up...

Allrighteee FTE know it alls. Here's the deal. Many of you have posted during my recent truck purchase of the 2003 F350 CC LWB, 4x4. Yes, during the 600 miles I have driven it in the past two days since purchase its been enjoyable and quite a bit different ride than my 07 F150 CC. (Good to be back in a Super Duty after the F150 stint, its really the only way to look "down" on others at redlights.)

This truck has a Volant Cold air intake and what appears (after my own FTE research) to be a half azzed zoodad mod. The zoodad mod on my truck only has three 1" diameter intake holes feeding the Volant.

First mods for me are longevity based decisions. I want to do the CCV then address the 4R100 transmission defects. I also want to put a compression brake on it from BD or Pacbrake since I tow construction equipment

Questions are as follows:

During my research on the zoodad it appears that the intake holes on my truck need to be larger. Much larger? FWIW I don't think I can pull off Tenn01PSD350's (aka Mike) massive zoodad bird bath looking modification, but should I make them larger?

What's the best mods to improve the 4R100 life? New larger pan? New accumuator? The Ford dealer flushed it during routine maintenance (less than 45 days ago) and to certify it under Ford CPO program. What else?

Any issues with Diff. life? I assume that I should check the diff fluid and make sure its synthetic for heavy towing? Does the diff cover/reservoir need to be larger?

The 7.3 takes some getting used to with the 4spd. My 6.0 with torqshift always seemed ready and in the right gear (well, when it was new and worked). There are times when I feel like I've got to get on it to make this thing move (also has something to do with larger 285 70R17 tires too).

Then there is the whole F150 mindset I need to unlearn after a year where it was always downshifting and always revving when going up any incline. The 7.3 at times seems to loaf and "ahem" diesel.....


 
Reply
Old Apr 18, 2008 | 09:25 PM
  #2  
rbaker6336's Avatar
rbaker6336
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
starting with transmission,I would put in a John Wood or BTS accumulator and 6.0 cooler
 
Reply
Old Apr 18, 2008 | 09:26 PM
  #3  
Tenn01PSD350's Avatar
Tenn01PSD350
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Be careful not to lug your truck. Get some gauges. That "whoseyerdad" was a joke as wee all know. I haven't even done the Zoodad.

Put a BTS VB in or install a Transgo shift kit. It is pretty easy despite the instructions once you figure out what needs doing. I may be posting an install how to on this in the near future as I have some pics of that which is why mine took so long.

Your diff fluid should be synthetic, but the only way to know is drain, clean, and refill with good stuff.
 
Reply
Old Apr 18, 2008 | 10:01 PM
  #4  
jefftb's Avatar
jefftb
Thread Starter
|
Senior User
Joined: Feb 2007
Posts: 195
Likes: 0
From: East Tennessee
Yeah, when I was researching the Zoodad and saw the whoseyerdad I could not stop chuckling to myself. My wife just sits and shakes her head at times when I'm on FTE.

Not sure what is meant by "be careful not to lug your truck" but when I said "diesel" I meant that it just seemed to chug up the incline at the same speed w/o much throttle input. I went up a long gradual incline today on 33 (from Maynardville back to Knoxville for you East TN members) and the transmission never downshifted at 50-60+ MPH. I am now used to the speed dropping on the F150 at the slightest incline and the truck downshifting to maintain speed on the same run. This truck almost never downshifts and I know that is due to torque profile from my previous diesel days but it just seems odd now.
 
Reply
Old Apr 18, 2008 | 10:18 PM
  #5  
Tenn01PSD350's Avatar
Tenn01PSD350
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by jefftb
Not sure what is meant by "be careful not to lug your truck" but when I said "diesel" I meant that it just seemed to chug up the incline at the same speed w/o much throttle input. I went up a long gradual incline today on 33 (from Maynardville back to Knoxville for you East TN members) and the transmission never downshifted at 50-60+ MPH. I am now used to the speed dropping on the F150 at the slightest incline and the truck downshifting to maintain speed on the same run. This truck almost never downshifts and I know that is due to torque profile from my previous diesel days but it just seems odd now.
When you lug the truck your egts will go way up. That is why you need a pyro. You also need a boost gauge to know what is normal for your engine, that way when you get some sort of decline you can easily see it on the gauge and know that it is usually boost related. But not always, as lack of fuel will provide no boost too.
 
Reply
Old Apr 18, 2008 | 10:30 PM
  #6  
rbaker6336's Avatar
rbaker6336
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
Originally Posted by jefftb
I am now used to the speed dropping on the F150 at the slightest incline and the truck downshifting to maintain speed on the same run. This truck almost never downshifts and I know that is due to torque profile from my previous diesel days but it just seems odd now.
I know what you mean here,I can pull hills with 10k lbs without downshifting where my sons f-150 will downshift empty
 
Reply
Old Apr 18, 2008 | 10:46 PM
  #7  
PowerstrokeJunkie's Avatar
PowerstrokeJunkie
Post Fiend
Joined: Jul 2005
Posts: 14,582
Likes: 12
From: 21791
Here's some valuable info for doing the exhaust brake mod, very cheaply but very effective.
 
Reply
Old Apr 20, 2008 | 09:21 PM
  #8  
jefftb's Avatar
jefftb
Thread Starter
|
Senior User
Joined: Feb 2007
Posts: 195
Likes: 0
From: East Tennessee
Plan at this point is:

new valve body (BTS, BD Power, Factory Tech Gregg Evans are the options)
new larger pan (Mag Hytec, BD Power)
bypass mod line
transmission flush since its already torn down

then an exhaust brake and gauges.

How long should it take to do the valve body, pan, bypass line and transmission flush? While I am under there I may just put in a Fumoto drain valve....
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-1

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-2

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-3

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-4

Every 2026 Ford Engine Explained

 Brett Foote
story-5

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-6

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-7

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-8

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-9

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
Old Apr 20, 2008 | 10:16 PM
  #9  
jeff7825's Avatar
jeff7825
Posting Guru
Joined: Sep 2007
Posts: 2,121
Likes: 0
From: Knoxville, TN
There is also the John Wood VB from ITP Diesel.
 
Reply
Old Apr 21, 2008 | 12:49 PM
  #10  
dave at BD Power's Avatar
dave at BD Power
Former Vendor
Joined: Mar 2006
Posts: 662
Likes: 0
From: Surrey, BC
I am not here to push my products but let me know if you have any questions on the BD Brake, Transmission modifications or anything for that matter.

I have member pricing available to you guys.

Dave
 
Reply




All times are GMT -5. The time now is 04:11 AM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE