TRANSGO 4L80E-3 Reprogramming Kit Instructions
- October 27, 2023
- TRANSGO
Table of Contents
TRANSGO 4L80E-3 Reprogramming Kit
Burnouts
In water or bleach box: Break it loose in 1st/2nd, then up-shift to 3rd.
THESE ARE THE TRANSMISSION RATIOS:
“1st” 2.48 “2nd” 1.48 “3rd” 1.00 “4th” .75
To find top gear ratio, multiply the axle ratio x .75 [Example 3.73 x .75 =
2.79] Other ratios: Multiply axle ratio x trans ratio. [Example 3.73 x 2.48 =
9.25]
Step 3: Prepare relief valve assembly for installation in step 2 page 8. Install YELLOW spring on stem end of valve. Push stem end of valve up thru cover while a buddy installs “E” clip. Use patience when assembling Relief assembly, small parts like to fly across the shop.
Separator Plate Hole sizes
Step 1: Discard original separator plate, drill holes in new plate.
Holes ABC are shift firmness selection:
ABC: Comfort = .076 Firmer = .093
AB: Off Road & Hot street = .125
AB: With high stall converter = .125
Hot street & High stall make “C” .106
Drills Provided
Step 1: Valve Body Assembly
Note: The only changes you are making on this page is replacing the 3rd
Accum spring. The rest of the steps are for re-assembly purposes.
- Discard Original 3rd Accum spring. Install NEW WHITE spring.
- Install gasket onto accumulator housing.
- Install TransGo® full size gasket and the separator plate onto the valve body. Align the plate and gasket by inserting bolts in holes “Z”.
- Install the accumulator housing and tighten the bolts.
- Pull out the “Z” bolts. Put a small amount of oil on the plate and place the Case gasket on the plate and align it carefully at the “Z” holes.
- Place a small amount of assembly gel on the holes for the check balls and place seven 1/4″ balls on the holes.
Step 1: Install New PR springs, washer, boost valve and bushing. No Stem
Type 2 PR valve: Do not install spacer. Stem Type 1 PR valve: Install spacer
on PR valve stem.
Step 2 : Install New Stronger 4th bolt & washer.
Step 3: Remove Servo cover and piston. Install New ORANGE Spring.
If NEW spring does NOT fit re-use original.
Step 1: Install & tighten “Z” bolts first. Re-install TFP switch assembly
(make sure o-rings are in place) and install remaining bolts & tighten.
Step 2: After tightening all the bolts remove two bolts and install the
relief assembly.
Discard the dip stick stop bracket if equipped.
Internal Upgrades—If Trans is Apart.
Step 1: Carefully pry the lower retainer out of the springs. Then with
side cutters grab each spring up close to upper retainer and twist and pull at
the same time to remove the springs. Install the springs furnished into the
old retainers. Intermediate Snap Ring
Step 2: Install new thicker snap ring. This is the last snap ring that
goes in case. Stops wear on the lugs which reduces lug blowout.
When using a NON-lockup converter: Order Trans Go® P/N 48-CCV to provide
corrected oil flow into the converter. Keeps converter full for better
cooling.
Recommended
Add-on Parts for High Temp Applications and Hot-Rods!
(Install while trans is out of the car for repair/upgrade or overhaul)
4L80E-HTRK
Hi-Temp Ring & Endplay Upgrade
Corrects/Prevents/Reduces
No Lockup and 4th hot——Codes 68—39—85 Hard shifts and no 4th—-Direct Clutch
Slippage Prevents Metal Particles by Separating Shafts Hot Idle Forward Clutch
Slip, Aborts LU & 4th. Reverse Delay——-Bind-up in reverse when hot.
**48-CCV
**
Converts Lock-up Pump to use with Non-Lockup Converter.
For converters WITHOUT a converter clutch only!
4L80E: Vacuum System Installation
IMPORTANT: This kit is for Hot rod transplants and show off trucks. It should not be installed in trucks for commercial use or towing.
Step 3: Adjust Pin length: For normal use, shorten the pin to 1.325. If shifts are then too firm, make pin shorter, but do not use a pin shorter than 1.285. Grind as necessary. Use Pin length 1.365 for Hi stall converter use.
Installing Vacuum Line
“If the engine is supercharged or turbo’d you’ll need a pressure bypass valve
in the vacuum tube to prevent high pressure trans damage.”
Order Trans Go P/N: VBP- Vac
Step 1: Using 3/16 Brake line (not provided), route brake line down to
modulater case fitting. Use enough line to comfortably reach within 2″ of both
the vacuum brake booster Tee location (Step 2) and the case vacuum fitting.
After determining correct length that will allow you to se-cure the line and
reach both fittings, cut the brake line and swedge both ends to prevent vacuum
hoses from slipping off. Secure lines and hoses with Zip-ties.
Step 3: Install a short piece of Vacuum hose between case fitting and brake line. Make sure rubber vacuum line is as straight as possible to prevent it from becoming kinked. Zip-tie the hose to the line and fitting as shown.
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>