Categories

Oct
05

Which servo should I choose?

FAQ: Do I need the standard corvette servo or the servo with the longer pin? And what about the 4th gear billet servo?

If you have a 700R4, 4L60E, 4L65E, or 4L70E automatic transmission, and want to upgrade your servo, you have several different options available to you:

  1. Corvette servo
  2. Corvette servo with longer pin
  3. Billet 4th gear servo

First, you can install just the standard corvette servo found here

With this servo, right away you’ll notice faster and firmer 1-2 shifts and even slightly better 2-3 shifts. Also, this servo will give your transmission 50% more apply pressure, just what you need to keep from burning your transmission up under heavy load situations.

The corvette servo is a great upgrade for not a lot of money, and you do not need to take the transmission out to install it. Our servo comes with two rigid seals and two rubber seals, as well as 3 pages of instructions for easy and detailed installation.

Second, you can install the standard corvette servo with the longer pin found here

With this package, you get the corvette servo outlined above and you get the longer pin all in one package. The included longer-than-stock servo pin does a great job of getting your band adjusted to the right clearance. It’s almost more important to get the right clearance than it is to change to the corvette servo.

Not sure if you need the longer pin? You can test your clearance by pushing in on your servo cover. If you notice that it moves in between 1/8″-1/4″, you know you need the longer pin. This is way too much travel, as the clearance should be closer to 1/16″.

Also, since the servo isn’t traveling as far before it applies the band, the 1-2 and even the 3-4 shift will be much quicker.

Finally, you can install the standard corvette servo, and purchase the 4th gear billet servo found here

With these two products, you’ll get all the benefit of the corvette servo, as well as better holding capacity in 4th gear. Plus, if you go this route, you won’t need to buy the servo with the longer pin.  The reason is because this 4th gear billet servo is manufactured with tighter tolerances, which tightens up the clearance issue that the longer pin typically tackles. 

If money allows, Oregon Performance Transmission recommends purchasing the standard corvette servo, as well as the 4th gear billet servo. 

If you have any questions about servos, or which combination might be right for your vehicle, please do not hesitate to contact us at sales@oregonperformancetransmission.com for more information.

 

 

Sep
25

FAQ: Torque Converter Splines

faq-vesta

 

Q: I need a new converter for my 700R4 and I want to make sure I order the right one. I see you offer a 27-spline, and a 30-spline option. Which one do I need?

A: Sometimes just knowing your transmission year, or your casting number on your transmission case, is not enough to ensure you are ordering the correct converter. The reason is because a popular upgrade on the 1982-1984 transmission is to upgrade the 27-spline shaft to the later, stronger, 30-spline shaft. This is why it’s a good idea to count your splines just to be sure.

Q: Which splines do I count — the inner or the outer ones?

A: You will want to count the outer splines on your existing converter — the smaller ones that are closest to the end of the output shaft. These can be difficult to count so you will need to take your time.

If you have any questions about which converter will work best with your application, please feel free to email us at any time at sales@oregonperformancetransmission. 

Dec
15

Transmission Failure and Snowplowing

7437758
Snowplow season is upon us for many across the country.  

Plowing and towing at low speeds with an automatic transmission can produce a huge amount of heat, and when it comes to transmission life and longevity, heat is the number one enemy.

If you find yourself needing to rebuild or upgrade your transmission this winter, and you will be plowing or towing, we really recommend our high performance rebuild kits. Our HP kits come with Red lined clutches and Black Kolene steel plates. These clutches are specifically designed to handle 300% more heat than the factory type clutches, and considerably more than the HD high energy clutches. We have HP rebuild kits from Oregon Performance Transmission for the Ford, Chevy, and Dodge transmissions, as well as top quality shift kits to compliment your rebuild.

Our high performance rebuild kits can be found by clicking on the popular transmission application links below.

Chevrolet HP Rebuild Kits
• TH350
• TH400
• 700R4
• 4L60E
• 4L80E

Dodge HP Rebuild Kits
• A904
• A727
• A518, 46rh, 46re
• A618, 47re, 47rh
• 48re

Ford HP Rebuild Kits
• C4
• C6
• AOD
• AODE, 4R70W, 4R75W, 4R70E, 4R75E
• E4OD, 4R100

Even though it’s winter and cold outside, if you are snowplowing or towing, we strongly recommend installing a transmission cooler as well. Our best-selling transmission cooler is the 47391 40,000 GVW Low Pressure Drop cooler from Tru-Cool. This cooler is a work horse and will definitely help keep your transmission temperatures low. You can find it on our website, https://www.oregonperformancetransmission.com under part number LNG-47391.

As always, if you have any questions please do not hesitate to email us at sales@oregonperformancetransmission.com

Mar
18

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. 

 

Feb
29

The Corvette Servo

 

 

Corvette Servo (part number NTP-K51828C)

TRG-7-2p

Arguably one of the most inexpensive, yet most rewarding upgrades to your 700R4 or 4L60E (4L65E, 4L70E) transmission is the corvette servo. Right away you will notice faster and firmer 1-2 and 2-3 shifts. The corvette servo will give your transmission 50% more apply pressure, which is just what you need to keep from burning your transmission up under heavy load situations. The corvette servo is a must for any performance vehicle, for towing, RV, or off road use, and is a positive upgrade for any 700R4 or 4L60E transmission. Our servo is easy to install and can be done with the transmission in the vehicle. The servo comes with all of the necessary seals for installation; including the outer cover o-ring, as well as three pages of instructions with diagrams.If you have already decided to install a corvette servo, your next question might be whether or not you should use the corvette servo with the longer pin instead. Here’s how to decide.

Corvette Servo with Longer Pin (part number OPT-CV-Pin)NTP-CorvetteWP

After a short amount of time, by 30,000 miles or so, the band has been broken in and the servo travel has increased a lot.  Too much servo travel can cause a delay in shifting, a longer 1-2 and 3-4 shift, as well as a slide-and-bump-into-gear type shift.  By 100,000 or more miles, the band is wearing out and then you are at the point where the servo almost cannot travel far enough. Once it is beyond the travel of the servo, it will burn up the transmission.  The longer pin is designed to take up that slack and prevent the servo travel.    You can actually test your current travel now.  Just get underneath it and with a pry bar, push in on the cover of your servo.  If it goes in more than 1/8″, you definitely want the longer pin.  The clearance should be closer to around 1/16″.Please note:  If you are installing, or already have installed, a shift kit, you will likely not need a longer servo pin.  Most shift kits are designed to address the servo travel issue already.Another option to consider is the 4th gear Billet Super Servo.

Billet Super Servo 4th Gear Apply Piston & Cover (part number SUP-K034)SUP-K034

The 4th gear billet super servo is a tremendous product that addresses the 3-4 shift.  You will find better holding capacity in 4th gear, as well as an overall firmer 3-4 shift. The servo has an excellent design that includes a lip seal on piston that allows for much less leakage, as well as a  proper 4-3 (no drag) release. To top it off, this servo is constructed of billet aluminum and is built to last. The 4th gear super servo in conjunction with the corvette servo will solidify your transmission shifts from start to finish while giving overall life to the transmission and vehicle.In some cases, we have noticed during installation that the 4th gear servo does address some of the clearance problems as well as decreasing some of the servo travel;  basically eliminating the need for the longer servo pin.

As always, if you have any other questions or need any product recommendations, please feel free to contact us at salesdesk@optsales.com.

Promotions, New Products and More...

Sign Up for our Newsletter today!      

{ Oregon Performance Transmission will NEVER sell, transfer, show or otherwise cause your email to be seen by anyone else. }