TRANSGO 4L60E-PRO High Performance Valve Body Kit User Manual

4L60E-PRO™
Reprogramming Kit
Fits 1996-2018 except 2005 Corvette
Does Not Fit 1993-1995 or Hybrid
User Manual

Kit Includes Optional Internal Upgrades. Unit Removal is Recommended.
Corrects/Reduces/Prevents
3-4 Clutch and 2nd Band Burn-up–Bang, Bump or Slide Bump 1-2, 2-3 Shift Reduces code P1870, converter slip/shudder.

Optional Gear Command 1996-2008

Holds Manual 1st–2nd–3rd to any RPM–Backshifts to gear you select.
If the trans is on the bench, follow the instructions for the Pump Ring Kit & Clutch Spring Kit Supplied.
Step 1
Identify the Type of Accum housing you are using (2nd or 3rd Type), then choose a new spacer that matches your housing and install it with a new small orange spring. Install new seal on new 1-2 piston furnished. Lubricate the seal & install the piston with 3 tab side up, followed by large & medium orange springs as shown. Don’t Use Save the 2nd new larger White spring for page 3, step 5.
Step 1.
Install the New larger WHITE spring inside the original.

Work Trucks & 2009 up Skip This Step!

Do step 3 only if you wish to add: Holds first gear to any speed in M1 and be able to go back to M1 at ANY speed! Discard the original 1-2 shift valve. Re- use original spring, insert NEW 1-2 Shift Valve, then Spacer, then Solenoid & Retainer.
Step 1. Remove and discard the converter Reg valve, spring, and isolator valve. Save the end plug and clip. Note: If the original outer Valve is in a bushing or it measures larger than .441” VB has been modified Skip Steps 1, 2 & 3 and reassemble as found.
Step 2. Insert ISO-CONV Valve into the bore. Using a hex bolt as a handle, push the valve in and out at least 20 times with slight side pressure. The valve must fall in and out of the bore. Clean the bore. Remove the bolt.

Step 3.
For Normal Use:
Install BLUE spring & ISO-CONV Valve, Models with Cylinder Deactivation:
Install Spacer (Recessed end outward), & ISO-CONV Valve. Do not use Blue Spring! If Cylinder deactivation has been eliminated with an aftermarket tune Install a New blue spring &  ISO-CONV valve discarding the new spacer. Always Reuse the original End Plug and Clip.
Step 4. Remove 3-2 Downshift Valve assemblies to access&  discard the original dividerplug. Save the roll pin for reuse.
Year & Models using Cylinder Deactivation
2005-07 Buick Rainier 5.3L
2007-09 Avalanche 5.3L
2008-09 Avalanche 6.0L
2005-09 Trailblazer, Envoy Denali 5.3L
2007-10 Silverado, Sierra, Suburban,
Yukon, Tahoe, 1500 5.3L
2007-08 Silverado, Sierra, Suburban,
Yukon, Tahoe, 1500 6.0L
Step 5. Using a longer threaded bolt, position the new divider plugs into the bore wiggle to get it started straight & making sure it installs deep enough for the original roll pin to insert thru the hole in the new plug. Remove the threaded bolt and reassemble the 3-2 downshift with New White Spring.

Add this Step for 2009 & Up only.

(VB without 3-2 Solenoid) See Page 5 for Solenoid ID. With a 5/16 Drill chamfer both sides of this hole by hand. Lay Plate on a hard flat surface. Insert Slug into the hole & gently whack it with a Hammer on both sides of the Plate to expand it. Skip This for 1996-2008 models.
Step 1.
Remove the original Boost Valve & Bushing, Main Regulator Valve, spring, and bumper spring. Install NEW parts furnished as shown.
With a converter stall of 2800 or lower
Skip Step 2
Step 2.
High Stall Converter only.
(Above 2,800)
Enlarge holes as listed.
A .093 (2nd)
B .136 (3rd)
C .125 (4th)
Step 3. EPC Screen Fix
Largest screen in VB plate. The sides of the screen suck together causing low line pressure with a high throttle. Burns clutches and bands. Wire Spacer will keep screens apart. Additional safety: Drill four .040 to .047 or two 1/16” holes thru the top of the screen.
Step 4. Install New Plate & Gaskets
Start Z bolts first to align the plate & gaskets to the case.
Step 1.
© VB Install Six 1/4” check balls as shown.
Step 2. 4th Accumulator
Discard the original Spring. Install the original guide Pin into Case first. Install the original piston as shown followed by Yellow & Red Springs regardless of how it came apart.
Step 1. Disassemble Servo as shown and discard the original 2nd piston & housing Install the newly supplied 2nd Piston & Housing using the new Rings & Seals provided.
Step 2. Install the BLUE cushion spring inside the original cushion spring and reassemble it.
Step 3. Band Adjust: Install 2nd Piston and housing into the trans. Install 2 GOLD shims against the housing. Install 4th Piston and cover without Blue O-ring. Install wire retainer. Check the band by wiggling it front to rear 1/8” or more. (See below) Final Check– You must be able to turn the driveshaft both ways by hand in Neutral. If too tight remove one shim, and test again. Then remove and install the cover with BLUE O-ring.

7-CS 700R4 & 4L60E Clutch Spring Kit

2621 Merced Ave. El Monte, CA 91733
Product Support 626-443-7451
For High-Performance Applications that rev OVER 5500 RPM.
Designed for use with either the 4l60-HD2 or 700 2-3 Reprogramming Kit® Under 5500 rpm operation? This product is not needed, however, you may
install it if you follow the instructions for “Under 5500 RPM”.
Problems & Solutions:
Problem 1: Above approx 5500 rpm, the check ball in the air bleed capsule of the input drum may not seat due to outward centrifugal force. When that occurs, you now have a BIG leak in 3rd gear oil. (The orifice provided fixes that.) Problem 2: This same centrifugal force causes the residual fluid under the 3-4 pistons to stack up at the outer edge and lift the piston up dragging the 3-4 clutches around in 1st and 2nd above 5500 RPM. (The springs provided fix that.)
Problem 3: At even higher RPMs, centrifugal force acts on the inner seal of the 3rd clutch piston causing it to pull away from the forward clutch steel housing. This usually starts above 6200 rpm (varies) and creates a leak in 3rd that gets worse and worse with more RPM.
This softens the 2-3 shift feel and worsens progressively as shift point RPM goes up. Finally, it flairs or won’t even complete the 2-3 shift. This burns the 3-4 clutch and hazes the band.
Try lowering your 2-3 shift points below 6000 and retest.
(Skip this step for Under 5500 RPM use.)
Step 1: Identify your drum.
3rd type: Protruding type capsule
2nd type: Recessed type capsule. See additional data on page 2.
1st type: No capsule (not shown) ball in the drum. Don’t use it for High rev applications. Use later drum, converter & pump.
(Skip this page for Under 5500 RPM use.)
Step 2: Remove pistons. Drive the capsule out with a punch from this side of the drum.
After the orifice is installed 3-4 pistons should not rock when placed in the drum.
2nd type capsule only:
Grind the head of the new capsule to the dashed line. Clean grinding flash from orifice hole.
Step 3: If you have 2nd type capsule be sure to grind the new 3-4 orifice as described above. 3rd type capsule, No grinding required. Place new 3-4 orifice in housing and gently tap in with 1/4” flat nose punch.

700/4L60E Clutch Spring Installation:

Reduces 3-4 Clutch burnups Caused by Cross-leaks, Centrifugal Apply, and SlowKD Release
3-4 Spring Retainer Types
1st type retainer: No Hooks If the White springs will snap over the flares on the retainer use them. If flares are too big use small Plain tapered springs with the large end over the flares.
1st Type 3/4 retainer No Hooks
This keeps the 3-4 clutches from accidentally applying because of minor cross leaks at the rings, support, case, or valve body. It also reduces clutch drag during 3-2 kick-down and prevents residual oil clutch apply at revs above 5500.
This spring kit works with the standard 3-4 clutch pack or when installing additional plates.
Step 1 For Under 5500 RPM use: All V6, V8,s & Diesel’s Install 14 New Springs that fit your retainer. Install two springs then skip one, install two, skip one, all the way around the retainer.
For over 5500 RPM use only: Install All 22 Springs 2nd type retainer Has Hooks: Use Yellow springs Install small end of springs on the tang side of the retainer. Bend hooks inward so they won’t hook.
2nd Type 3/4 retainer Has Hooks
Remove these return springs if you are using this kit. If you are not using this kit always put them back in.

Fwd / Coast Spring Retainer Types

Step 1 For Under 5500 RPM use: V6, V8,s, and Diesel install 10 New large plain springs leaving blanks at 3, 6, 9, and 12 O’clock Large plain springs are tapered. Install the end that fits your retainer.
Over 5500 RPM use only: Install All 14 SpringsInstallation washer only used for assembly. Place on top of the retainer while compressing springs.
Note: If you change the 3-4 springs you MUST change the Fwd / Coast springs as well. They work together as a team. Do not attempt to use them alone.

With UNBREAKABLE HARDENED STEEL RINGS

The rings in this kit are not cast iron or compressed metal. They’re not brittle. They are tough HARDENED steel. Because they are slightly larger and TIFF, pump efficiency is increased. You will notice higher pressure at HOT idle. The kit also includes a priming spring that corrects the high rev drop that occurs above 5500 RPM. You may have noticed that max throttle up-shifts on high-revving models get soft. This kit corrects high rev pressure drop.
Installing Spring

1. Place the spring in the vise and squeeze it to coil bind. This will pre-set it so that it will not get weaker during usage.
2. Then open the vise until the length of the spring is about 1 7/16” and tap it over to the side of the vise jaws until about 3/16” is sticking out.
3. With the slide installed in the pump, place the spring pocket over the spring and against the vise. While holding the pump firmly against the vise, whack the spring into the pump with a hammer handle.

INSTALLATION WITH USED PUMP OR USED VANES

With used vanes, you will notice two breaks in flats on the inside edge of the vanes where the rings ride. When assembling the pump be sure to install the vanes with the break-in flats against the new rings. If you don’t the rotor may not turn freely.
INSTALLATION WITH NEW VANES, NEW PUMP, or NEW ROTOR KIT.
Install the rings furnished. If the rotor does not turn freely remove the vanes one at a time and run the inside edge about 5 times back and forth on emery cloth to make the break-in flat. Install the break-in flat against the rings. No emery? About a dozen back-and-forths on a cement floor also do a nice job.

© TransCo 1990

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