SC2031-C Factory Shifter Conversion Kit
Specifications
- Supported Transmission Types: TH350, TH400, TH200-4R, 700-R4,
4L60E, 4L70E, 4L80E, 6L80E, 6L90E, 8L90E - Supported Vehicle Models: Various Chevrolet models from the
1960s
Product Usage Instructions
Parts Overview
Shift Control Levers: 602F, 602L, 602A, 602E
Transmission Cable Bracket: 603.4, 603.5, 650-110
Cable Mount Bracket: SW002
Detents: SW001, SW004-001, SW001-006
Hardware Overview
This kit includes various hardware items such as Cable Clip,
Cable Adjuster, Pin, Nut, Machine Screw, Small Washer, Sheet Metal
Screw, Cotter Pin, Hex Bolt, Large Washer, and Shifter Cable Nylon
Lock Nut Pin.
Required Tools for Installation
Tools required include Metric socket set, SAE socket set,
Standard wrench set, Pliers, Drill, Drill Bit Set, Phillips &
Flat-head screwdrivers.
Installation Steps
- Chock wheels and disconnect the vehicle’s battery.
- Adjust both bulkheads on the shifter cable to be in the center
of their threads. - Remove the center console to gain access to your shifter
assembly. - Disassemble the shifter.
Safety first – ensure the vehicle is secure and the battery is
disconnected before starting the installation process.
Turn the bulkheads to the middle of the threads for fine
adjustments later on.
Refer to the factory service manual for proper instructions on
how to remove the console.
Remove the dust cover and the rod actuation assembly. Remove the
neutral safety switch and detent.
FAQ
Q: How do I know if I purchased the correct kit for my
application?
A: Refer to the supported transmission types and vehicle models
listed in the specifications section. Ensure your vehicle matches
the compatibility list before beginning installation.
Q: Do I need any additional tools for the installation?
A: The typical tools required are listed in the “Required Tools
for Installation” section. Additional tools may be needed depending
on your specific application.
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meets
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Thank you for your purchase!
With any questions regarding your purchase, products, or installation do not hesitate to reach out to us:
Phone: 585-924-2700 Email: Support@shiftworks.com
This set of instructions will cover Shifter Packages & Conversion Kits.
* Always verify you have purchased the correct kit for your application BEFORE beginning your installation!!!
Conversion Kits
TH350 TH400 TH200-4R 700-R4 4L60E 4L70E 4L80E
6L80E, 6L90E, 8L90E
1964-65 Chevelle 1964-65 El Camino 1964-65 Malibu
SC2031-C SC2031-CS
SC2041-C SC2041-CS
1966-67 Chevelle 1966-67 El Camino 1966-67 Malibu
SC2032-C SC2032-CS
SC2042-C SC2042-CS
SC2041-05C SC2041-05CS
SC2041-06C SC2041-06CS
SC2042-05C SC2042-05CS
SC2042-06C SC2042-06CS
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Shifter Packages
TH350 TH400 TH200-4R 700-R4 4L60E 4L70E
1964-65 Chevelle 1964-65 El Camino 1964-65 Malibu
SW6403
SW6404
4L80E
6L80E 6L90E 8L90E Powerglide
SW6405 SW6406
SW6402
1966-67 Chevelle 1966-67 El Camino 1966-67 Malibu
SW6603 SW6604
SW6605 SW6606
SW6602
Parts Overview
Shift Control Levers:
602F
602L
602A
3
602E
Transmission Cable Bracket:
3 & 4 Speed Automatic Pan Brackets
603.4
603.5
6 and 8 Speed Automatic Case Bracket
650-110
Cable Mount Bracket:
SW002
4
Detents
SW001 SW004-001 SW001-006
5
Hardware Overview:
This is an overview of the hardware items you can expect to find in your Shiftworks shifter conversion kit.
Cable Clip
Cable Adjuster M10 x 1.5 Hex 10-24 x 9/16
Pin
Nut
Machine Screw
Small Washer
Sheet Metal Screw
Cotter Pin
M8 x 1.25 Hex Bolt
Large Washer
Shifter Cable Nylon Lock Nut Pin
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Required Tools for Installation
This is a list of typical tools required to complete this job. Additional tools may be required depending on your application.
Metric socket set SAE socket set Standard wrench set Pliers
Drill Drill Bit Set Phillips & Flat-head
screwdrivers
Preliminary steps
Before installing and adjusting your shifter assembly, follow these steps to ensure you have the best adjustment for your shifter and installation process.
1.) Chock wheels and disconnect the vehicles battery
Safety is always the most important step. When installing this kit, it is important to properly chock wheels to ensure the vehicle will not roll or move while clicking through the transmission gears. Additionally, disconnect the vehicles battery before continuing.
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Figure 1
2.) Adjust both bulkheads on the shifter cable to be in the center of their threads.
Setting your Shiftworks cable bulkhead to the center of their threads will help later with your cable adjustment.
Simply turn the bulkheads until they are in the middle of the threads. These bulkheads are used for fine adjustments.
Figure 2
3.) Remove the center console to gain access to your shifter assembly.
Remove the center console and surrounding trim to gain access to your shifter assembly. Refer to the factory service manual for details on how to properly remove the console.
* If you are installing a Shiftworks complete Shifter Package and NOT converting your factory shifter, skip to step 6.
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4.) Disassemble the shifter
Figure 3
First remove the dust cover If there is one on your shifter. Then remove the rod actuation assembly from the shifter assembly. This is held together with a series of pins and retainers. The parts highlighted in red above will need to be removed. Remove the neutral safety switch and detent. The neutral safety switch is held in with two nuts. Remove those, then unbolt the detent and remove.
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Figure 4
After disassembly, your shifter should look like the shifter above. [Fig. 4.]
Now you will need to remove the rod actuator pivot mounting bracket on the bottom of the shifter. This is spot welded on. You will need to drill out the spot welds using a 3/8 drill bit. Drill slowly and carefully to prevent drilling all the way through the shifter body.
Figure 5
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5.) Reassemble the shifter
Attach the cable bracket to the shifter body. This is done by drilling holes at the front of the shifter body and bolting on the bracket. The following diagram shows the positioning for where to drill your holes. Use a 13/64 drill bit to drill your first hole. Then loosely bolt on the cable bracket and use a center punch to mark the remaining holes and then drill. Mount the bracket using the supplied hardware with the nuts on the top side of the shifter.
Figure 6
Figure 7
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Figure 8
Add the shifter cable pin to the shifter. Position the hole in the pin so you can easily put a cotter pin through. Follow the diagram to see the correct order of application.
The shifter cable pin is highlighted in red on the image to the right. It should look like this installed. Installing the pin backwards could result in cable binding and shifting issues.
Figure 9
Figure 10
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Make sure that your shift handle has this tab on the bottom and that it is straight. This is what moves your neutral safety switch. If it is bent it could cause the switch to not actuate properly relative to its position.
Figure 11
Bolt on the detent and neutral safety switch using the original hardware. First attach the detent, then attach the switch, ensuring the tab aligns with the switch slider.
Figure 12
13
The switch is slotted for adjustment purposes. It can be moved to find the best adjustment for each application.
Figure 13
Before proceeding further, check that the shifter will still move though it is entire range of motion and properly engages with all gear positions and stops.
6.) Reinstall The Shifter
Install your shifter and shifter cable into the car. Be sure to route the shifter cable from inside the car through the hole in the chassis with label end first. Once the cable is fastened in place with the rubber side of the 3-hole grommet facing down, install the shifter, securing it with the four factory mounting bolts. We will adjust the cable later. To view adjustment instructions, visit page 21.
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Please note:
While attaching the shifter cable to the cable eyelet, there is a supplied cotter pin and a washer. It is important for these to be installed in the correct order. Please follow the diagram [Fig. 14] on the right.
7.) Install Shift Control Lever
Figure 14
In your Shiftworks conversion kit, you will receive a new shift control lever that attaches to the transmission’s range select shaft. The range select shaft length will either be what we call a short-shaft or a long-shaft depending on the transmission. Typically, the TH350, TH400, 200-4R, and 700R4 use a “short” range select shaft. The 4LE series transmissions can vary between a “short” or “long” range select shaft, while 6-speed and 8-speed transmissions almost always utilize a “short” range select shaft.
Long Range Select Shaft
Figure 15
Short Range Select Shaft 15
Figure 16
To remedy this, some of our kits come with an additional shift control lever. Shift control levers are always installed with the “Shiftworks” logo facing outwards away from the transmission. Install your Shiftworks shift control lever by matching the cutouts on the shaft to the opening on lever. Then install and tighten the M10 x 1.5 nut.
Figure 17
Correct Applications
Correct Long Shaft
Figure 18
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Correct Short Shaft
Incorrect Applications
Making sure you install the range select shaft and the shift cable correctly is important to the functionality of your shift linkage as well as the longevity of the components. Be sure to install correctly and please contact Shiftworks customer service at 585-924-2700 or email support@shiftworks.com with any questions.
Incorrect
Figure 19
This is the incorrect lever for the long range select shaft. As you can see by the steep angle in the cable. This can cause resistance and binding in the shifter linkage.
Incorrect
Figure 20
This is incorrect because the cable adjuster pin is backwards on the shift control lever. This will typically damage the cable eyelet when attempting to force into park.
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Incorrect
This is incorrect because the cable adjuster pin is backwards on the shift control lever and can lead to the cable binding when shifting out of park.
Figure 21
Incorrect
Figure 22
This is incorrect due to the shift control lever being installed backwards. On all shift control levers the “Shiftworks” logo will be facing out.
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8.) Install Transmission Cable Bracket
3 and 4 speed application
Remove the two transmission pan bolts and loosely install the Shiftworks transmission pan bracket. Please note the adjustment holes on the transmission pan bracket. The bracket features multiple adjustment holes to accommodate different transmission applications. We have created diagrams for which holes we recommend using which are ideal for specific applications. Please refer to those below to see what is recommended for your application.
Transmission Cable Bracket Diagrams
Figure 23
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Figure 24
Tighten transmission pan bolts with bracket installed. Make sure not to overtighten. The transmission case is aluminum and will strip easily.
6 and 8 speed application
Install the transmission case bracket as shown in the illustration. Use the provided M8 x 1.25 hardware to fasten the case bracket.
20
Figure 25
Linkage adjustment:
1.) Set a baseline
Ensure that the shifter cable bulkheads are centered on the threads at both ends and that the pin on the shift control lever is centered.
Baseline adjustments
Figure 26
2.) Adjust cable with BOTH the shifter and transmission in neutral
With your transmission in park, (All the way forward towards the front of the car) move the shift control lever down 2 clicks to the neutral position [See Fig 27]. Then place your shifter in the neutral position as well [See Fig 28].
21
Figure 22
Figure 28
Figure 27
Install your cable into the car and connect linkage to the shifter first, then look at the cable at the transmission side. The cable is adjusted by moving the pin on the shift control lever and the adjustment slots on the transmission pan bracket. Fine adjustment can be made with the bulkheads on the cables.
Figure 29
The cable eyelet and pin should be around 5 ½” to 5 ¾” to where the cable meets the transmission bracket. This measurement is taken in the neutral position. This measurement is a suggestion and could vary depending on your application.
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For TH400 Application:
Use the single non-slotted hole at the end of the transmission cable bracket [See Fig 30].
For 6-8 speed Application:
Attach the transmission cable bracket to the case as shown in the illustration to the right [Fig 31]. The suggested distance from the pin to the face of the case bracket should be around 5 ½” 5 ¾”. This measurement can vary on different applications and is just a base measurement to aim for.
Figure 30 Figure 31
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Cable Clip Installation:
One of the most common mistakes made installing a new cable is how the cable clips are installed. Installing these clips backwards can cause a loose fit and potential for the clip to come out. Be sure to install the clips the correct way as shown in the photos below [Fig 32].
Correct
Figure 32
Incorrect
Large adjustments should be made first with the cable pin on the shift control lever. Then adjust the bulkheads on the cables for fine adjustments. With both the transmission and shifter in neutral, adjust the shift cable so the cable eyelet can freely be removed from the pin on the shift control lever in any gear. There should be no resistance when taking the cable off the pin. By doing this procedure you are ensuring your transmission is fully in gear.
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Ensure your transmission cable bracket is positioned properly, and make sure the shifter cable bracket on the side of the shifter is tight and positioned in the center of its slot. Use Shiftworks cable #K100 Series or #K102 Series. No other cables are recommended. If you are having difficulty setting up your shift linkage or have any other questions regarding products, please reach out to us. We are here to help.
Phone: 585-924-2700 Email: support@shiftworks.com
Social media:
Instagram: @shiftworksshifters Facebook: Shiftworks, inc.
Thank you for choosing Shiftworks!
www.shiftworks.com © 1991-2024 SHIFTWORKS®
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Documents / Resources
 |
SHIFTWORKS SC2031-C Factory Shifter Conversion Kit [pdf] Installation Guide SC2031-C, SC2031-CS, SC2041-C, SC2041-CS, SC2032-C, SC2032-CS, SW6403, SW6404, SC2031-C Factory Shifter Conversion Kit, SC2031-C, Factory Shifter Conversion Kit, Shifter Conversion Kit, Conversion Kit |