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Torque Converter

Hub Dimensions (B dimensions on image)

Converter Type Lower Limit Upper Limit
P.G., TH350, TH400, 727 1,872 inch 47,55 mm 1,875 inch 47,63 mm
TH2004R, TH700R4 1,745 inch 44,32 mm 1,748 inch 44,40 mm
4L60E, 4L60E w/ LS1 (300mm) 1,745 inch 44,32 mm 1,748 inch 44,40 mm
Ford Lower Hub 1,992 inch 50,60 mm 1,996 inch 50,70 mm
Ford Upper Hub 1,982 inch 50,34 mm 1,986 inch 50,44 mm
904 1,495 inch 37,97 mm 1,498 inch 38,05 mm

Pilot Dimensions (C dimensions on image)

Converter Type Lower Limit Upper Limit
P.G., TH350, TH400 1,700 inch 43,18 mm 1,703 inch 43,26 mm
TH2004R, TH700R4, 4L60E 1,700 inch 43,18 mm 1,703 inch 43,26 mm
Ford Big Block 1,847 inch 46,91 mm 1,850 inch 46,99 mm
Ford Small Block 1,372 inch 34,85 mm 1,375 inch 34,93 mm
727, 904 1,807 inch 45,90 mm 1,810 inch 45,97 mm
904 Early Model 1,547 inch 39,29 mm 1,550 inch 39,37 mm

Overall converter lengths (A dimensions on image)

Converter Type Lower Limit Upper Limit
P.G., Turbo 6,120 inch 155,4 mm 6,150 inch 156,2 mm
2004R, 700R4, 4L60E 5,844 inch 148,4 mm 5,874 inch 149,2 mm
4L60E w/ LS1 (300mm) 6,620 inch 168,1 mm 6,640 inch 168,7 mm
Pan Fill C-4, C-6, FMX, AOD 5,895 inch 149,7 mm 5,925 inch 150,5 mm
CF C-4 5,620 inch 142,7 mm 5,650 inch 143,5 mm
727 NLU 5,400 inch 137,2 mm 5,475 inch 139,1 mm
904 NLU 5,345 inch 135,8 mm 5,375 inch 136,5 mm

Hub Slot Widths and Depths

Application Width Depth
Turbo 350, 400, P.G., 700R4, 4L60E and 2004R 0,402 inch 10,21 mm 0,501 inch 12,73 mm
TF 727 and 904 0,400 inch 10,16 mm 0,625 inch 15,88 mm

Hub Slot Dep (this dimension should also be considered on Torqueflite converters,
(D dimensions on image)

Converter Type Lower Limit Upper Limit
904, 727 4,810 inch 122,2 mm 4,840 inch 122,9 mm

Hub length (X dimensions on image)

Converter Type Hub length
TH700R4 10" S-10 (245mm) 2,250 inch 57,2 mm
4L60E w/ LS1 (300mm) 2,345 inch 59,6 mm
TH2004R, TH700R4 lock-up 2,000 inch 50,8 mm
11" P.G. 2,125 inch 54,0 mm
All Fords with F-30 hub 2,313 inch 58,7 mm

Hub to converter top dimension (this should be considered on all Torqueflite converters, to insure that no interference is encountered with the pump
(Y dimensions on image))

Converter Type Hub to Converter
11" Torqueflite 727 1,000 inch 25,4 mm
12" Torqueflite 727 0,813 inch 20,6 mm
11" Torqueflite 904 0,938 inch 23,8 mm
10" Torqueflite 904 1,000 inch 25,4 mm
10" Torqueflite 727 1,125 inch 28,6 mm

Bolt Circles

Converter Type Bolt Circle
Chrysler 10,000 inch 254,0 mm
GM Small 10,750 inch 273,1 mm
GM Large 11,500 inch 292,1 mm
GM LS1 (300mm 11,000 inch 279,4 mm
Ford Mustang II 9,375 inch 238,1 mm
Ford Small 10,500 inch 266,7 mm
Ford Large 11,438 inch 290,5 mm

Fluid Capacity

Size of converter Number of quarts
13 inch 5 qts
12 inch 4 qts
11 inch 3,5 qts
10 inch 3 qts
9 inch 2,5 qts
8 inch 2 qts
7 inch 2 qts

Runout - runout should be less than 0,25 mm (0,010 inch).

Balance - should be checked with the turbine in at least three positions. This insures that the converter will not be internally out of balance. Overall balance should be held within 10 grams.

Internal Dimensional Standards:

Fit of pilot bushing - 0,10 mm-0,20 mm (0,004 inch - 0,008 inch) typical.

 

Turbine clearance specifications

Torque Converter Nominal Size Turbine Clearance
7.0 inch(178,0 mm) 0,080-0,090 inch 2,03 - 2,29 mm
8,0 inch(203,0 mm) 0,075-0,085 inch 1,91 - 2,16 mm
9,0 inch(229,0 mm) 0,090-0,100 inch 2,29 - 2,54 mm
10.0-12.0 inch(254,0 - 305,0 mm) 0,100-0,125 inch 2,54 - 3,18 mm

Spline locations

Converter Type Hub to Stator distance Hub to Turbine Spline
G.M.Powerglide 3,000 inch 76,20 mm 4,500 inch 114,30 mm
G.M.Turbo 350 and Turbo 400 3,050 inch 77,47 mm 4,550 inch 115,60 mm
G.M.Turbo 2004R 2,375 inch 60,58 mm 3,650 inch 92,71 mm
G.M.Turbo 700R4 2,375 inch 60,58 mm 3,400 inch 86,36 mm
4L60E w/ LS1 (300mm) 2,705 inch 68,70 mm 4,650 inch 118,11 mm
FORD C-4 3,188 inch 80,98 mm 4,750 inch 120,65 mm
FORD C-6 3,188 inch 80,98 mm 4,750 inch 120,65 mm
FORD AOD 3,250 inch 82,55 mm 4,550 inch 115,57 mm
CHRYSLER 727 2,800 inch 71,12 mm 4,050 inch 102,87 mm
CHRYSLER 904 2,800 inch 71,12 mm 4,200 inch 106,68 mm

Material standards

Parts Material (minimum standards)
Hub 1018 Steel
Turbine Spline 1018 Steel
Inner Race 52100 or 8620 Steel *
Outer Race 8620 Steel *
Pilot 1018 Steel **

* Requires heat treating
** Some require heat treating

Designed by HD