32RH • 42RE • 42RH • 44RE • 44RH • 46RE • 46RH • 47RE • 47RH • 48RE • A727 • A904
Heavy Duty Throttle Valve Kit 22771-HDK3
42RE • 42RH • 44RE • 44RH • 46RE • 46RH • 47RE • 47RH • A727 • A904
Oversized Lube Regulated Pressure Regulator Valve Kit 22771A-07K
OE valve must match '78-later design
-
Helps cure:
- Delayed engagement
- Pressure regulator buzz
- Converter drain back
- Lube failures
- Converter bushing failure
48RE
Oversized Lube Regulated Pressure Regulator Valve & Line/TV Pressure Plug Kit 22771A-16K
-
Helps cure:
- Delayed engagement
- Pressure regulator buzz
- Converter drain back
- Lube failures
- Converter bushing failure
U151E • U151F • U250E
Boost Valve Kit 27741-01K
4L80-E • 4L85-E
Actuator Feed Limit Valve Kit 34200-16K
-
Helps cure:
- Wrong gear starts
- Clutch failure
- Solenoid performance codes
- No 4th
- Band failure
- Low solenoid feed pressure
- 2-3 Neutral
- 2nd Gear starts
- Code 68, 85, 86, 87
4L80-E • 4L85-E
Oversized TCC Regulator Valve Kit 34994-18K
-
Helps cure:
- TCC codes
- TCC apply & release concerns
- Converter shudder
- Burnt converter
4R44E • 4R55E • 5R44E • 5R55E
Oversized Coast Clutch Valve Kit 37947-33K
-
Helps cure:
- No engine braking in D3 to low
- No 4th (4R44E/55E)
- No 2nd (5R44E/55E)
- No 5th (5R44E/55E)
- No coast clutch apply
C6
Boost Valve Kit 36946-02K
C6
Boost Valve Kit 36946-01K
C6
Boost Valve Kit 36946-03K
4R100 • E4OD
1-2 & 2-3 Accumulator Control Valve Kit 36948-13K
4R44E • 4R55E • 5R44E • 5R55E
O-Ringed End Plug & Checkball Kit 37947-13K
4L60
Oversized Throttle Valve 77968
Not compatible with early '82–'90 aluminum sleeve units.
-
Helps cure:
- Low line rise
- 3-4 Clutch & band failure
TF-80SC • TF-81SC
Oversized Secondary Pressure Regulator Valve Kit 39741-11K
-
Helps cure:
- TCC codes
- TCC slip
- TCC surge
- Loss of lube oil
- Overheated fluid, bushings & converter
- Poor shift quality
- Harsh Reverse
