General Motors THM400 Torque Converters
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PNH #: 4608AM — General:
Make: General Motors Years: 1970 - 2025
Class:
Transmission:
A270, A275, AT540, THM400
Diameter:
13.000
Pilot:
1.703
Input Splines:
30
Ring Gear Teeth:
Lock Up:
No
Hub Type:
slotted hub
Total Height:
Bolt Circle:
11.500
Mounting:
6 rect. pads
Thread:
10mm x 1.50 thread
PNH #: 4601 — General:
Make: General Motors Years: 1964 - 1998
Class:
Transmission:
3L80, THM325, THM350, THM400, THM425
Diameter:
13.000
Pilot:
1.703
Input Splines:
30
Ring Gear Teeth:
Lock Up:
No
Hub Type:
slotted hub
Total Height:
6.150
Bolt Circle:
11.500
Mounting:
3 pads
Thread:
3/8" x 16 thread
PNH #: 4605 — General:
Make: General Motors Years: 1964 - 1967
Class:
Transmission:
THM400
Diameter:
13.000
Pilot:
1.703
Input Splines:
30
Ring Gear Teeth:
Lock Up:
No
Hub Type:
slotted hub
Total Height:
6.150
Bolt Circle:
11.500
Mounting:
3 rect. pads
Thread:
PNH #: 4608 — General:
Make: General Motors Years: 1964 - 2025
Class:
Transmission:
3L80, THM350, THM400, THM425, THM475
Diameter:
13.000
Pilot:
1.703
Input Splines:
30
Ring Gear Teeth:
Lock Up:
No
Hub Type:
slotted hub
Total Height:
6.150
Bolt Circle:
11.500
Mounting:
6 pads
Thread:
3/8" x 16 or 10mm x 1.50 thread