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JMBX Performance Converter Kit GM-RK-688

Street/Strip applications only. For use with GM 258mm early-style stators only.

Transmission Unit: 6L80, 6L90
Core: GM 258mm
Dampered: No
Lockup: Multi-Plate
Unit Size: 300mm
Clutch Material: HTE
Turbine Hub Input Spline Count: 36

JMBX Performance Converter Kit GM-RK-688WC

Street/Strip applications only. For use with GM 258mm early-style stators only.

Transmission Unit: 6L80, 6L90
Core: GM 258mm
Dampered: No
Lockup: Multi-Plate
Unit Size: 300mm
Clutch Material: Woven Carbon
Turbine Hub Input Spline Count: 36

Hub Cover MI-HC-B

Material: Plastic
Color: Black
For Hub Dia.: 1-3/4"
Length: 1.500"

Impeller Hub GM-90CM-68MR

Hub Mount: Flanged
Material: Chromoly
Pump Drive Style: Slots
Assembled Height: 2.370"
Flange Outer Dia.: 3.930"
Height: 2.510"
Journal Dia.: 1.829"

Impeller

Thrust Bearing GM-N-26

Bearing Style: Enclosed
Material: Hardened Steel
Inner Dia.: 2.517"
Thickness: 0.239"
Outer Dia.: 3.577"

Shim GM-WS-54

Material: Steel
Inner Dia.: 2.516"
Outer Dia.: 3.188"
Thickness: 0.030"

Shim GM-WS-53

Material: Steel
Inner Dia.: 2.516"
Outer Dia.: 3.188"
Thickness: 0.020"

Snap Ring

Sprag Cartridge

7.1

Mechanical Diode® GM-MD-6-2

Use of this mechanical diode requires a 3.25" bore stator such as the Opel or Sonnax GM-ST-082 or GM-ST-086.

Material: Steel
Spline Tooth Count: 36
Design Strut Count: 10
Engagement Strut Count: 2

Stator

Thrust Bearing GM-N-11

Bearing Style: Enclosed
Material: Hardened Steel
Inner Dia.: 2.500"
Thickness: 0.150"
Outer Dia.: 3.391"

Rivet FS-RV-1L

20 Required

Rivet Type: Solid
Rivet Head: Flat
Head Dia.: 0.312"
Shank Dia.: 0.165"
Length: 0.530"

Turbine

Turbine Hub GM-HTCM-688R

Material: Chromoly
Core: 258mm
Internal Spline Tooth Count: 36
External Spline Tooth Count: 68

O-Ring

Seal FD-O-9

Material: PTFE
Seal Style: Scarf cut
Width: 0.099"
Height: 0.094"
Outer Dia.: 2.772"

Piston

Clutch Plate GM-CP-2

Tab Style: External
Material: HTE
Outer Dia.: 10.080"
Inner Dia.: 8.125"
Thickness: 0.141"

Clutch Plate GM-CP-1

Tab Style: Internal
Material: HTE
Outer Dia.: 9.790"
Inner Dia.: 7.587"
Thickness: 0.181"

Thrust Washer BW-WP-4

Material: Vespel®
Thickness: 0.062"
Inner Dia.: 1.427"
Outer Dia.: 2.185"

Front Cover

Pilot GM-PI-23

In GM-RK-688, GM-RK-688WC

Material: Steel
Pilot Type: Weld-in
Outer Dia.: 1.703"
Length: 0.890"

GM

6L80, 6L90 (258mm), Multi-Plate Performance Torque Converter