Transmission Line Pressure

Transmission Line Pressure

The following charts provide the mainline pressure readings for all of the various TCI® transmission models. These readings can be obtained by attaching a 300 psi fluid pressue gauge to the appropriate pressure port on the transmission, and running the engine at 2000 rpm.

These pressure readings provide a valuable source of information when troubleshooting transmission problems or as a system check after rebuilding a transmission or installing a TCI® valve body.

Simply click on the transmission you are interested in, or scroll down to locate the appropriate line pressure chart for your needs.

General Motors	Ford	Chrysler
Powerglide	C4	Torqueflite A727/A904
TH350	C6	Torqueflite A500/A518
TH400	AOD
2004R/700R4

Powerglide Pressure Test

StreetFighter® Forward Pattern - P R N D L

Range	Minimum	Maximum
Park	N/A	N/A
Reverse
Neutral	N/A	N/A
Drive	60-75	95-120
Low	110-140	110-140

Full Manual Forward Pattern - P R N D L

Range	Minimum	Maximum
Park	N/A	N/A
Reverse	180-220	180-220
Neutral	N/A	N/A
Drive	180-220	180-220
Low	180-220	180-220

CirclematicT Forward Pattern - P R N D L

Range	Minimum	Maximum
Park	N/A	N/A
Reverse	0	140-170
Neutral	N/A	N/A
Drive	0	140-170
Low	0	140-170

Trans-Brake Forward Pattern - P R N D L

Range	748200	628200
Park	N/A	N/A
Reverse	180-220	90-110
Neutral	N/A	N/A
Drive	180-220	180-200
Low	180-220	180-200

TH350 Pressure Test

StreetFighter® Forward Pattern - P R N D 2 1

Range	Minimum	Maximum
Park	55-70	170-200
Reverse	80-150	235-270
Neutral	55-70	170-200
Drive	60-90	120-175
Second	75-110	120-175
Low	75-110	120-175

Full Manual Reverse Pattern - P R N 1 2 3
Full Manual Forward Pattern - P R N 3 2 1
Trans-Brake Reverse Pattern - P R N 1 2 3

Range	Minimum	Maximum
Park	145-170	145-170
Reverse	145-170	145-170
Neutral	145-170	145-170
Drive	145-170	145-170
Second	145-170	145-170
Low	145-170	145-170

TH400 Pressure Test

StreetFighter® Forward Pattern - P R N D 2 1

Range	Minimum	Maximum
Park	55-70	150-175
Reverse	95-150	235-260
Neutral	55-70	150-175
Drive	70-90	135-165
Second	135-165	135-165
Low	135-165	135-165

Full Manual Reverse Pattern - P R N 1 2 3
Trans-Brake Reverse Pattern - P R N 1 2 3

Range	Minimum	Maximum
Park	180-200	180-200
Reverse	180-200	180-200
Neutral	180-200	180-200
Drive	180-200	180-200
Second	180-200	180-200
Low	180-200	180-200

200-4R/700-R4 Pressure Test

StreetFighter® Forward Pattern - P R N OD D 2 1

Range	Minimum	Maximum
Park	90-110	190-230
Reverse	95-120	200-300
Neutral	90-110	190-230
Overdrive	90-110	190-230
Drive	90-110	190-230
Second	185-230	185-230
Low	185-230	185-230

Full Manual Reverse Pattern - P R N 1 2 3

Range	Minimum	Maximum
Park	90-110	90-110
Reverse	200-300	200-300
Neutral	90-110	90-110
Overdrive	190-230	190-230
Drive	190-230	190-230
Second	190-230	190-230
Low	190-230	190-230

C4 Pressure Test

StreetFighter® Forward Pattern - P R N D 2 1

Range	Minimum	Maximum
Park	55-75	220-250
Reverse	150-175	235-280
Neutral	55-75	220-250
Drive	55-75	155-170
Second	90-105	110-125
Low	90-105	110-125

Full Manual Reverse Pattern - P R N 1 2 3
Trans-Brake Reverse Pattern - P R N 1 2 3

Range	Minimum	Maximum
Park	140-160	140-160
Reverse	140-160	140-160
Neutral	140-160	140-160
Drive	140-160	140-160
Second	140-160	140-160
Low	140-160	140-160

C6 Pressure Test

StreetFighter® Forward Pattern - P R N D 2 1

Range	Minimum	Maximum
Park	55-95	160-190
Reverse	75-135	240-310
Neutral	55-95	160-190
Drive	55-95	160-190
Second	55-95	160-190
Low	55-95	160-190

Full Manual Reverse Pattern - P R N 1 2 3
Trans-Brake Reverse Pattern - P R N 1 2 3

Range	Minimum	Maximum
Park	140-160	140-160
Reverse	140-160	140-160
Neutral	140-160	140-160
Drive	140-160	140-160
Second	140-160	140-160
Low	140-160	140-160

AOD Pressure Test

StreetFighter® Forward Pattern - P R N OD D 1

Range	Minimum	Maximum
Park	55-65	185-220
Reverse	75-90	250-300
Neutral	55-65	185-220
Overdrive	55-65	185-220
Drive	55-65	185-220
Low	55-65	185-220

Torqueflite 727/904 Pressure Test

StreetFighter® Forward Pattern - P R N D 2 1

Range	Minimum	Maximum
Park	0	0
Reverse	145-175	230-280
Neutral	0	0
Drive	50-60	90-110
Second	50-60	90-110
Low	50-60	90-110

Full Manual Reverse Pattern - P R N 1 2 3

Range	Minimum	Maximum
Park	0	0
Reverse	230-280	230-280
Neutral	0	0
Drive	110-130	110-130
Second	110-130	110-130
Low	110-130	110-130

Trans-Brake Reverse Pattern - P R N 1 2 3

Range	Minimum	Maximum
Park	0	0
Reverse
Neutral	0	0
Drive	130-150	130-150
Second	130-150	130-150
Low	130-150	130-150

Torqueflite A500/518 Pressure Test

StreetFighter® Forward Pattern - P R N D 2 1

Range	Minimum	Maximum
Park	0	0
Reverse	145-175	230-280
Neutral	0	0
Overdrive	65-75	130-140
Second	55-60	90-100
Low	55-60	90-100