What is the real difference between HD4R100 and 4R100?
BACKGROUND
To address customer demand for a heavy duty transmission to meet the high load, severe duty cycle needs of commercial and recreational users, FCSD is releasing an enhanced version of our remanufactured 4R100 transmission.
This transmission will be Motorcraft branded and offered for customer-paid repairs only.
FEATURES / BENEFITS
This exciting new product is built with numerous durability and performance upgrades. These include:
Enhanced Torque Converter for better performance and longer life
Oversize one piece case bushing for improved durability
Enhanced Forward, Direct, and Intermediate Friction plates for longer life under heavy load shifts
All new special upgraded steel plates
Center Support Enhancements for improved gear train life
Mercon V-OIL for greater heat resistance
Oversize Pump Gear Set for improved oil flow
Upgraded Extension Housing Bushing for improved durability
45 Element Intermediate Sprag for greater strength to withstand heavy loads
Special coast clutch drum for improved engine braking and increased durability
All new iron planetary assemblies for improved durability
All new one way clutches for improved durability
All new electronics for improved reliability
Revised calibration gives better shifts for heavy duty use
Improved gasketing for reduced leaks
ORDERING INFORMATION
Order from your Powertrain Distributor.
APPLICATION INFORMATION
This Heavy Duty transmission is offered in 4 versions to fit non PTO diesel equipped trucks from 1999 to 2003 model years.
Detailed application data is in the attached file (Excel) (Pdf) as well as Dealer Catalog systems.
The regular 4R100 applications will still be available.
Order the HD4R100 based on your customer mix keeping in mind fleet, towing, and commercial users will be the likely users of this product.
PRICING
Dealer Net Price is $2494.00 with a $1000.00 core deposit.
Suggested Retail is $3325.33.
This price is very competitive with other heavy duty units available in the market today
Service Part Number Motorcraft HD4R100 TRM Number
1999 4R100HD Super Duty 4X2 F250, 350, 450, 550 7.3L F81Z7V000HBRM 6U2Z7V000HRM TRM-1621
1999 4R100HD Super Duty 4X4 F250, 350, 450, 550 7.3L F81Z7V000LBRM 6U2Z7V000LRM TRM-1622
2000 4R100HD Super Duty 4X2 F250, 350, 450, 550 7.3L F81Z7V000HBRM 6U2Z7V000HRM TRM-1621
2000 4R100HD Super Duty 4X4 F250, 350, 450, 550 7.3L F81Z7V000LBRM 6U2Z7V000LRM TRM-1622
2001 4R100HD Super Duty 4X2 F250, 350, 450, 550 EXCURSION 7.3L 1C3Z7000EBRM 1C3Z7V000ERM 6U2Z7V000ERM TRM-1619
2001 4R100HD Super Duty 4X4 F250, 350, 450, 550 EXCURSION 7.3L 1C3Z7000FBRM 1C3Z7V000FRM 6U2Z7V000FRM TRM-1620
2002 4R100HD Super Duty 4X2 F250, 350, 450, 550 EXCURSION 7.3L 1C3Z7000EBRM 6U2Z7V000ERM TRM-1619
2002 4R100HD Super Duty 4X4 F250, 350, 450, 550 EXCURSION 7.3L 1C3Z7000FBRM 6U2Z7V000FRM TRM-1620
2003 4R100HD Super Duty 4X2 F250, 350, 450, 550 EXCURSION 7.3L 1C3Z7000EBRM 6U2Z7V000ERM TRM-1619
2003 4R100HD Super Duty 4X4 F250, 350, 450, 550 EXCURSION 7.3L 1C3Z7000FBRM 6U2Z7V000FRM TRM-1620
After my experience with a Ford reman engine (cracked block, loose heads, poor compression) and oil pump (4 psi output when installed), I wouldn't wouldn't buy a remanned anything from Ford.
Enhanced Torque Converter for better performance and longer life
Oversize one piece case bushing for improved durability
Enhanced Forward, Direct, and Intermediate Friction plates for longer life under heavy load shifts
All new special upgraded steel plates
Center Support Enhancements for improved gear train life
Mercon V-OIL for greater heat resistance
Oversize Pump Gear Set for improved oil flow
Upgraded Extension Housing Bushing for improved durability
45 Element Intermediate Sprag for greater strength to withstand heavy loads
Special coast clutch drum for improved engine braking and increased durability
All new iron planetary assemblies for improved durability
All new one way clutches for improved durability
All new electronics for improved reliability
Revised calibration gives better shifts for heavy duty use
Improved gasketing for reduced leaks
Since cabindoc subscribed, I can only guess that another member might find this information useful.I'll share more, in the hope that nobody takes my ribbing seriously or personally:
This transmission has very solid shifting with a stock tune, but any boost in performance makes the torque converter lockup harshly. I'm working with the tune folks and they are very supportive, but this TQLU issue has us all scratching our heads. The line "All new electronics for improved reliability" (a nod to kd0axs) makes us wonder if this means pulse-width modulation or just on-off. Does the PCM get a change when the transmission is allegedly upgraded (a nod to dkf), or is there an external module that comes with the transmission?
Who else is curious about this? Should I just stop pestering people about my shift and go blow snot bubbles in my beer?
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You asked what is different between the regular and HD versions. That list gives a pretty detailed explanation of what is different.
I think the only way you are going to get any more information is if this thread gets the attention of Mark Kovalski.
Ford Trucks for Ford Truck Enthusiasts
As for Mark Kovalski, that's very useful information. As soon as I'm finished replying here, I'll try to learn how to contact him. Thank you for that!
You asked what is different between the regular and HD versions. That list gives a pretty detailed explanation of what is different.
I think the only way you are going to get any more information is if this thread gets the attention of Mark Kovalski.
I've heard many tuners up the line pressure to try to firm up the shifts. Maybe that plays into the lock up issues you're having.

















