Transtar Industries Inc.

4L80E/4L85E Torque Converter

4L80E/4L85E Torque Converter Family:

Torque Converter Remanufacturing Standards

GM 4L80E / 4L85E
  • Replacement of all worn or damaged hubs
  • 100% new Friction Linings
  • 100% new Bearings
  • All Pistons machined to exceed factory trueness specs
  • Outer Diameter trimmed to assist with better balance and function
  • HD and HP versions available 

4L80E/4L85E Torque Converter Part List


GM88 Lock Up
DIA BOLT CIRCLE MOUNT HUB PILOT SPL STALL
13.750 11.50 6 Pads

10mm x 1.5		 Milled Flats

2.050 Hub Height		 D: 1.703 35 1600-1800
GM88_3-4-Back.png GM88_3-4-Front.png Codes: 24202989, 24210827, 24210828, 24210829, 24210862, 24211407, 24217236, 24217328, 24217609, 2419327, 24219329,
24228538, 24240863

Notes: Stock Clutch Piston; GM88 Can Replace GM81

GM88-BP tech bulletinicon_AdobeAcrobat-(2).png Lock Up
DIA BOLT CIRCLE MOUNT HUB PILOT SPL STALL
13.750 11.50 6 Pads

10mm x 1.5		 Milled Flats

2.650 Hub Height		 D: 1.703 35 1600-1800
GM88_3-4-Back-(1).png GM88_3-4-Front-(1).png Codes: 24202989, 24210827, 24210828, 24210829, 24210862, 24211407, 24217236, 24217328, 24217609, 2419327, 24219329,
24228538, 24240863

Notes: Billet Clutch Piston
GM88H Lock Up
DIA BOLT CIRCLE MOUNT HUB PILOT SPL STALL
13.750 11.50 6 Pads

10mm x 1.5		 Milled Flats

2.050 Hub Height		 D: 1.703 35 2200-2400
GM88H_3-4-Back.png GM88H_3-4-Front.png Codes: 12491334, 17803871, 24210825, 24210830, 24210831, 24217235, 24217364, 24219303, 24219326, 24219328, 24219330,
24227936, 364, 830

Notes: Stock Clutch Piston; GM88H Can Replace GM82
GM88H-BP tech bulletinicon_AdobeAcrobat-(2).png Lock Up
DIA BOLT CIRCLE MOUNT HUB PILOT SPL STALL
13.750 11.50 6 Pads

10mm x 1.5		 Milled Flats

2.650 Hub Height		 D: 1.703 35 1800-2000
GM88H_3-4-Back-(1).png GM88H_3-4-Front-(1).png Codes: 12491334, 17803871, 24210825, 24210830, 24210831, 24217235, 24217364, 24219303, 24219326, 24219328, 24219330,
24227936, 364, 830

Notes: Billet Clutch Piston
GM82 Lock Up
DIA BOLT CIRCLE MOUNT HUB PILOT SPL STALL
13.750 11.50 6 Pads

10mm x 1.5		 Slotted

2.050 Hub Height		 D: 1.703 35 1800-2000
GM82_3-4-Back.png GM82_3-4-Front.png Codes: 193, 19B1, 1SB1, 24202992, 24202993, 24210693, 366, 526, 604, 8676526, 8682604, 8690903

Notes: Stock Clutch Piston; GM82 With Flanged Hub Can Replace
GM88H
GM82-BP tech bulletinicon_AdobeAcrobat-(2).png Lock Up
DIA BOLT CIRCLE MOUNT HUB PILOT SPL STALL
13.750 11.50 6 Pads

10mm x 1.5		 Milled Flats

2.050 Hub Height		 D: 1.703 35 1800-2000
GM82-BP_3-4-Back.png GM82-BP_3-4-Front.png Codes: 193, 19B1, 1SB1, 24202992, 24202993, 24210693, 366, 526, 604, 8676526, 8682604, 8690903

Notes: Billet Clutch Piston
GM81 Lock Up
DIA BOLT CIRCLE MOUNT HUB PILOT SPL STALL
13.750 11.50 6 Pads

10mm x 1.5		 Slotted

2.050 Hub Height		 D: 1.703 35 1600-1800
GM81_3-4-Back.png GM81_3-4-Front.png Codes: 1SA0, 1SA1, 194, 492, 24202989, 24202990, 24202991, 24217609, 528, 576, 606, 675, 849, 8676528, 8682606, 8683670,
8683671, 8683675

Notes: Stock Clutch Piston; GM81 With Flanged Hub Can Replace GM88
GM81-BP tech bulletinicon_AdobeAcrobat-(2).png Lock Up
DIA BOLT CIRCLE MOUNT HUB PILOT SPL STALL
13.750 11.50 6 Pads

10mm x 1.5		 Milled Flats

2.050 Hub Height		 D: 1.703 35 1600-1800
GM81_3-4-Back-(1).png GM81-BP_3-4-Front.png Codes: 1SA0, 1SA1, 194, 24202989, 24202990, 24202991, 24217609, 492, 528, 576, 606, 675, 849, 8676528, 8682606, 8683670, 8683671, 8683675

Notes: Billet Clutch Piston

 

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