Introduction, The Legend

For the person looking for the absolute state of the art transmission for their SVT F-150, Lightning, Harley Davidson F-150 or Powerstroke Diesel 4R100 equipped vehicle, look no further. The Factory Tech Monster Box is it. Hand built to order by ASE Certified Technicians and built as strong as any 4R100 can be, the Monster Box will take an astounding 1,200 lb/ft of flywheel torque. Since it's introduction, the Factory Tech Monster Box has been the first and last name in true custom built to order 4R100 Transmission Performance. Now built and backed by Jasper Engines and Transmissions to the pre-existing Factory Tech standard in quality and unbeaten customer service. No Monster Box has ever failed from exceeding design specifications for input torque or horsepower. We can't even break one on a test stand using a grueling "test to failure" routine. OEM transmissions fail in less than 30 minutes on this test, while the Monster Box was run for 8 hours without failure.

The Reverse Clutch is upgraded from 5 to 6 friction elements for units that have the 5 friction design. The Intermediate Clutch is available with 4 friction single sided plates (optional) or Raybestos Blue Plate Special full race frictions. The Forward Clutch has 6 frictions instead of the stock 4 and has full race plates. The Direct Clutch gets 8 full race friction plates (Ford builds them with 4 or 5).  The Coast Clutch drum has 3 friction plates and the plastic thrust washer is replaced with a pressed in ball bearing assembly in the drum. The intermediate one way sprag is updated with a 45 element unit that holds 45% more torque than the stock unit. Overdrive is also beefed up 33% over stock with a 4 friction element clutch to make it the only aftermarket 4R100 with EVERY CLUTCH upgraded. The total increase in friction surface area is greater than any 4R100 or E4OD built anywhere. But we don't stop there!

 

Other Upgrades

The oil pan comes with the 4x4 deep sump pan with drain plug or optional Ford Racing Cast Aluminum Pan with drain plug. The pump boost valve is replaced with a better valve that features o-ring seals to prevent pressure leaks.

For shift control, you get the part that made Factory Tech the premier name in transmission performance, the Factory Tech Accumulator Valve Body already installed. No one can copy the Factory Tech Accumulator as we make the components in our own in-house machine shop to assure quality.

Big Savings on Factory Tech Converter Packages

Order your Factory Tech Monster Box and it comes with the Factory Tech Billet Diesel converter already installed. Sold separately, this converter alone retails for $950.  We can also order you a torque converter separately, call for details.

All converters are warranted for two full years. "......whatever you can do to one short of putting it behind a GE-90 Turbofan, they're pretty near indestructible." G Evans

Ordering Information

The Factory Tech Monster Box retails for $3348.00 with exchange, shipped free to most of the lower 48 states, some remote areas will require a small additional shipping charge. The single sided intermediate clutch option is $100 extra.  The Ford Racing Aluminum Pan is $200 extra.
 

Warranty

Factory Tech Monster Box Transmission Assemblies are intended for racing and performance use, and we warranty them for that. Any Monster Box that fails will be replaced, INCLUDING SHIPPING, PARTS, AND LABOR! for 24 months after purchase date. We don't think you need to worry about this, but nothing beats peace of mind when you shell out large dollars for a major powertrain upgrade. All Monster Boxes are now Dyno checked before shipment. All warranties can be taken care of at the shop of your choice.

All Factory Tech Converters are guaranteed to be free of defects in design, construction and workmanship and warranteed for 2 years from the date of sale when sold separately or as part of a Monster Box assembly package.

 

Specifications

• Reverse Clutch Pack 6 friction element, Borg Warner frictions
• Forward Clutch 6 friction element, Full Racing Plates
• Intermediate Clutch 3 friction element, Raybestos Blue Plate Special Racing Plates
• Optional 4 friction element single sided Full Race Plates
• 45 element intermediate sprag assembly
• Direct Clutch 8 friction element Full Race Plates
• Overdrive Clutch 4 friction element, Alto Standard or Borg Warner plates
• Coast Clutch 3 friction element Raybestos Standard or Borg Warner plates
• Ball Bearing assembly press fitted in clutch drum
• Pump Pulse Width Modulation pump with O ring seals on boost valve, can be built with On/Off Pump 
• Pan and Filter Standard with Deep Sump Pan and filter, custom order pans available
• Shift Control Factory Tech Accumulator, Model 2C or as applicable

If your builder will not give you written specifications like these, get another builder!!!!

Factorytech also provides an upgrade kit for those who want/know how to build the transmission themselves, or have a transmission shop of their choice do it.  With over 25 years of research and development, Gregg Evans (Factory Tech) has put the best of the very best high performance parts together in a kit that will allow you to build your own Monster Box transmission at a lower cost.  NOTE - This kit is designed for the professional transmission builder.

Click Here for information on the "Monster In A Box" rebuild kit.