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2004R High Performance Options

Looking for products to upgrade your 200-4R automatic transmission? Here are the most popular products we sell for the 2004R transmission:

Rebuild kit

Oregon Performance Transmission offers two rebuild kit options for the 2004R automatic transmission:  a standard rebuild kit and a high performance version. 

The high performance 2004R rebuild kit can be found here under part number OPT-2004R-RBHP, or by clicking on the photograph below.

OPT-2004R-RBHP

OPT-2004R-RBHP

This HP master rebuild kit includes:

  • A Transtec overhaul set with rubber seals, gaskets, o-rings, metal clad seals, and Teflon sealing rings, needed to complete your rebuild.
  • All Raybestos Red HP friction clutch plates
  • All Alto black Kolene Steel plates
  • New fluid filter
  • Kevlar Intermediate – 2nd gear band
  • Bushings for the pump and case

This kit is performance rated and will handle 300% more heat and horsepower, torque and abuse than the standard clutches.  The steel plates are Kolene coated with a special friction material that keeps them from slipping like the smooth steel are prone to do. This will give you a more positive clutch engagement.

Shift kit

The shift kit we typically recommend to go along with the high performance rebuild kit is the HD2 kit from Transgo. You can find it here under part number TRG-200-4R-HD2.

trg-2004r-hd2

TRG-2004R-HD2

This newly upgraded high performance shift kit fits year 1981-up and contains the following:

  • Billet aluminum 2nd gear HP servo
  • .500 boost valve
  • Large low-reverse boost valve

Full installation instructions are included with this kit

The new dual feed 3rd gear circuit increases direct clutch holding capacity by 200%.  This kit works for both street and strip use and can be installed with the transmission in the car.

Stator Support

From the factory the 2004R transmission had trouble with the stator support wearing out prematurely. For that reason it is always recommended to upgrade to this heat treated style if you still have the stock one in your transmission. You can find the upgraded stator support here under part number NTP-45812R.

NTP-45812R

NTP-45812R

10 vane / 13 vane pump kit

This is a must for high horsepower, heavy abuse applications, but is also definitely recommended if you just want to increase the life or durability of the transmission. This 10 vane pump will help to eliminate the line pressure fluctuations and high RPM pressure drops seen with the stock pump configurations. This kit includes a 10 vane rotor, vane rotor guide, pump slide, 10 vanes, 2 upgraded hardened heavy duty vane rings, O-ring, and slide seal. You can find the 10 vane pump kit here under part number NTP-K51819A.

NTP-K51819A

NTP-K51819A

 

Alternatively, the 13 vane pump kit can be found here under part number NTP-K51817J.

NTP-K51817J

NTP-K51817J

These parts are compatible with all GM, Cadillac, Chevrolet, Buick, Oldsmobile, and Pontiac applications with the 2004R transmission.  Here is a list of original vehicles that came with the 2004R transmission from the factory:

  • Caprice 1982-1990
  • Custom Cruiser 1981-1990
  • Cutlass Supreme 1983-1987
  • Delta 88 1981-1985
  • Deville 1981-1984
  • El Camino 1981-1987
  • Electra 1981-1984
  • Fleetwood 1981-1990
  • Grand Prix 1984-1987
  • LeSabre 1981-1985
  • Monte Carlo 1982-1987
  • Regal 1981-1987 

Please note that while the list above identifies original vehicles with the 200-4R, this transmission has become very popular to retro-fit into older vehicles (see photo here).

The 2004R transmission is part of the Turbo-Hydramatic series and is sometimes referred to as the 200-4R, 200R4, 2004R, 200-R4, TH200-4R, THM200-4R, and even the MW9.

An easy way to identify the 4 speed automatic 200-4R is by its irregular shaped pan and non-removable output shaft housing.

These parts and upgrades can help extend the life of your 2004R automatic transmission and well as provide significant performance results!

As always, if we can answer any questions or help in another way, please do not hesitate to contact us at salesdesk@optsales.com.

 

 

Product Showcase: ATSG Automatic Transmission Rebuild Service Manuals

[Reprinted in part from Automatic Transmission Service Group]

In 1985 Robert Cherrnay founded ATSG (Automatic Transmission Service Group) as a technical support service to the automatic transmission industry.  Automatic Transmission Service Group (ATSG) is the largest technical support service in the Automatic Transmission Industry. ATSG manuals are the world’s foremost service guides utilized by professionals and technicians to troubleshoot and diagnosis problematic areas, disassemble transmissions and reassemble accurately and efficiently. ATSG manuals cover all aspects of transmission care, overhaul and rebuild procedures. Straightforward and simple to use, ATSG manuals will assist professionals and non-professionals alike with all aspects of automotive transmission care.

ATSG-4l60eAs a provider of ATSG products, Oregon Performance Transmission is proud to showcase their technical manuals and update handbooks that are written and produced by ATSG professional technical staff.  Oregon Performance Transmission carries over 100 different manuals for over 40+ vehicle makes including Chevrolet, Ford, Chrysler, Nissan and Toyota, to name a few.  

For a direct link to our ATSG website category, please click here

ATSG-4l60eU

Why ATSG? 

ATSG has over 100 combined years of experience, knowledge and wisdom. ATSG technical manuals are in-depth, detailed and have assisted many technical professionals across the globe saving them tremendous amounts of time and money.

ATSG-AOD-cd

If you are looking to complete a band adjustment, torque specs, service a transmission, shift kits, or just doing a full rebuild on a unit, ATSG technical manuals are a must-have. The manuals cover many areas of transmission rebuild, including:

  • parts identification
  • exploded views 
  • wiring harness locations
  • hydraulic routing
  • electrical diagrams
  • internal planetary components
  • how to disassemble a transmission
  • how to rebuild the individual components
  • torque specs
  • valve body identification
  • extension housing overviews
  • how to assemble a transmission, and much, much more 

Our customers are routinely impressed with ATSG manuals and often recommend them to friends.  Here are a few recently received customer reviews:

“Really good book on transmission specifications and assembly”

“Nice manual, quality product”

“Just as promised.  Great book!”

“Everything I needed and then some.  Very accurate”

What is the difference between the blue cover book and the green cover book?

The blue cover book is the standard transmission rebuild manual.  This book will be your go-to guide for understanding and performing the process of transmission rebuilding.  If you are planning to rebuild your transmission and do not already have this manual, this is the one you will want and need. 

The green cover book the update manual.  This manual is intended for diagnostic work and/or troubleshooting codes.  While a few transmission updates are included in this manual, it relies primarily upon, and often refers back to, the original blue cover manual for rebuilding instructions.  Many DIY-er’s will not need this manual as it is most frequently used by professional shops.

What about these CD-ROM discs?

Some of the ATSG manuals are no longer available in paperback form.  Some obsolete books and/or less popular books have moved from book format to a mini-disc CD-ROM.  These discs are easy to use and will fit in the small, inner disc circle of any computer disc drive. 

Our ATSG service manuals now qualify for free U.S. shipping! 

As always, should you have any questions about ATSG transmission products or need assistance in identifying your transmission, please feel free to contact Oregon Performance Transmission at salesdesk@optsales.com

 

2004R High Stall produces results!

Recently customer Mark purchased our 2004R high stall torque converter (part number ORE-65-15B-10) and had these comments after installation:

“I just finished installing the 2000-2600 stall 2004R converter I bought from you Sep 29th. I wanted you to know how happy I am with it’s performance so far. My Corvette weighs 3120 lbs, has a 350 engine with about 435 hp/435 ft.lbs torque, and a 4.11:1 differential. The foot brake stall is about 2200rpm, and I think the flash stall is a little higher than that. Having gone from a 1500rpm stall converter to this one, my launch has improved greatly. I finally get the neck-snapping starts I should get with a 435hp engine. I did a 0-60 test, and it came in at under four seconds! … It seems to be a good balance between launch snap and street manners. Thank you so much for the great price on this quality torque converter. I will tell my friends where I got it.”

Thanks for your kind feedback, Mark. We love to hear successful project stories like yours.
Here’s a photo of Mark’s 1979 Corvette!
B

 

Performance in Oregon

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1935 Ford, 600hp, 434 small block Chevy engine with a 2004R transmission doing it’s job. 

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