Chevrolet Transmission Dimensions
Dimension "C" is the distance from the bellhousing to the center of the transmission mounting pad. Note: The mounting pad is usually a part of the extension housing, but the graphic shows it on the maine case. this means that dimension "C" is usually longer than dimension "B".
Powerglide (bellhousing pattern - Chevrolet, Fit-all)
| Style | A | B | C | D | E | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Short shaft | 25 23/64" | 644,1 mm | 16 5/16" | 414,3 mm | 20 9/16" | 522,3 mm | 3 3/4" | 95,3 mm | 19" | 482,6 mm |
| Shorty | 17 15/16" | 439,7 mm | 16 5/16" | 414,3 mm | 20 9/16" | 522,3 mm | N/A | N/A | 19" | 482,6 mm |
| Long shaft | 27 9/16" | 700 mm | 16 5/16" | 414,3 mm | 20 9/16" | 522,3 mm | 3 3/4" | 95,3 mm | 19" | 482,6 mm |
TH350 (bellhousing pattern - Chevrolet, BOP, Fit-all)
| Style | A | B | C | D | E | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 6" tailshaft | 27 11/16" | 703,3 mm | 21 5/8" | 549,3 mm | 20 3/8" | 517,5 mm | 3 3/4" | 95,3 mm | 19 1/8" | 485,8 mm |
| 9" tailshaft | 30 11/16" | 779,5 mm | 21 5/8" | 549,3 mm | 20 3/8" | 517,5 mm | 3 3/4" | 95,3 mm | 19 1/8" | 485,8 mm |
| 12" tailshaft | 33 27/32" | 859,6 mm | 21 5/8" | 549,3 mm | 20 3/8" | 517,5 mm | 3 3/4" | 95,3 mm | 19 1/8" | 485,8 mm |
TH400 (bellhousing pattern - Chevrolet, BOP)
| Style | A | B | C | D | E | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 4" tailshaft | 28 3/8" | 720,7 mm | 24 5/16" | 617,5 mm | 26 15/16" | 684,2 mm | 4 1/4" | 108 mm | 20" | 508 mm |
| 9" tailshaft | 33 27/32" | 859,6 mm | 24 5/16" | 617,5 mm | 27 15/16" | 709,6 mm | 4 1/4" | 108 mm | 20" | 508 mm |
| 13" tailshaft | 37 7/8" | 962,0 mm | 24 5/16" | 617,5 mm | 27 21/32" | 702,5 mm | 1 3/4" | 44,5 mm | 20" | 508 mm |
TH200-4R (bellhousing pattern - BOP, Fit-all)
| Style | A | B | C | D | E | ||||
|---|---|---|---|---|---|---|---|---|---|
| All | 27 11/16" | 703,3 mm | integral tailhousing | 27" | 685,8 mm | 3 3/4" | 95,3 mm | 19 1/8" | 485,8 mm |
TH700-R4 /4L60 (bellhousing pattern - Chevrolet)
| Style | A | B | C | D | E | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| All except Corvette |
30 3/4" | 781,1 mm | 23 3/8" | 593,7 mm | 22 1/2" | 571,5 mm | 3 3/4" | 95,3 mm | 20" | 508 mm |
| Corvette (1982-1992) |
29 7/8" | 759 mm | 23 3/8" | 593,7 mm | 22 1/2" | 571,5 mm | 3 3/4" | 95,3 mm | 20" | 508 mm |
| With Th350 6" tailshaft |
29 1/2" | 749,3 mm | 23 3/8" | 593,7 mm | 22 1/2" | 571,5 mm | 3 3/4" | 95,3 mm | 20" | 508 mm |
| * See note | 30 1/2" | 774,7 mm | 23 3/8" | 593,7 mm | 28" | 711,2 mm | 3 3/4" | 95,3 mm | 20" | 508 mm |
* An extension housing p/n 8673406 (old p/n 24214689) is available for the TH700R4/4L60 transmission that moves the rear transmission mount to the same position as a TH400 (short-style 4" tail) or TH200-4R transmission. This 7-3/8" long extension housing can eliminate transmission crossmember modifications when replacing a TH400 or TH200-4R transmission with a 4L60 assembly.
4L60E (bellhousing pattern - Chevrolet/removable)
| Style | A | B | C | D | E | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| All 1993-'95 exept Corvette |
30 3/4" | 781,1 mm | 23 3/8" | 593,7 mm | 22 1/2" | 571,5 mm | 3 3/4" | 95,3 mm | 20" | 508 mm |
| Corvette, 1993-'95 |
29 7/8" | 759 mm | 23 3/8" | 593,7 mm | 22 1/2" | 571,5 mm | 3 3/4" | 95,3 mm | 20" | 508 mm |
| Corvette (transaxle) 1996-up |
N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| All 1996-up exept Corvette and LS1 |
30 3/4" | 781,1 mm | 21 3/4" | 552,5 mm | 23 3/16" | 589 mm | 3 3/4" | 95,3 mm | 18 1/4" | 463,6 mm |
4L60E / 4L65E (w/ removable bellhousing) All LS1 Type
| Style | A | B | C | D | E | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| LS1, 1998-up |
31 5/32" | 791,4 mm | 21 3/4" | 552,5 mm | 23 19/32" | 599,3 mm | 3 3/4" | 95,3 mm | 18 1/4" | 463,6 mm |
4L80E 1991-Later (bellhousing pattern - Chevrolet)
| Style | A | B | C | D | E | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| std. duty 2WD |
32 11/16" | 830,3 mm | 26" | 660,4 mm | 30 3/8" | 771,5 mm | 4 1/4" | 108 mm | 20" | 508 mm |
| heavy duty 2WD |
31 15/16" | 811,2 mm | 26" | 660,4 mm | 30 3/8" | 771,5 mm | 4 1/4" | 108 mm | 20" | 508 mm |
| heavy duty long |
33" | 838,2 mm | 26" | 660,4 mm | 30 3/8" | 771,5 mm | 4 1/4" | 108 mm | 20" | 508 mm |
| 4WD | 29" | 736,6 mm | 26" | 660,4 mm | 30 3/8" | 771,5 mm | N/A | N/A | 20" | 508 mm |
6L80E 2006-Later (w/ removable bellhousing)
| Style | A | B | C | D | E | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 29 1/4" | 742,95 mm | 25 3/4" | 654,05 mm | |||||||
6L90E 2006-Later (w/ removable bellhousing)
| Style | A | B | C | D | E | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 30 1/2" | 774,7 mm | 27 1/2" | 698,5 mm | |||||||
Splines (output shaft) Pan Bolts (number of)
| Type | Output Splines | Pan Bolts |
|---|---|---|
| Alu. Powerglide (up to -63) | 16 splines | 14 pcs |
| Alu. Powerglide (from -64) | 27 splines | 14 pcs |
| TH350 | 27 splines | 13 pcs |
| TH400 | 32 splines | 13 pcs |
| TH200-4R | 27 splines | 16 pcs |
| TH700-R4, 4L60, 4L60E | 27 splines | 16 pcs |
| 4L80E | 32 splines | 17 pcs |
| 6L80E | 31 splines | 18 pcs |
| 6L90E | 36 splines | 18 pcs |
Chevrolet Transmission Ratios
| Transmission Ratios | 1st to 2nd Ratio Drop |
1st Gear | 2nd Gear | 3rd Gear | 4th Gear OD |
|---|---|---|---|---|---|
| Turbo 350 | 1.00 | 2.52 | 1.52 | 1.00 | N/A |
| Turbo 400 | 1.00 | 2.48 | 1.48 | 1.00 | N/A |
| 200-4R | 1.17 | 2.74 | 1.57 | 1.00 | 0.67 |
| 700R4 / 4L60E with PATC close ratio gear set. Low geared 1st with 11,72% less 1st to 2nd RPM drop than the wide ratio gear set. This is the same ratio as a 4R70W transmission. |
1.28 | 2.84 | 1.56 | 1.00 | 0.70 |
| 700R4 | 1.43 | 3.06 | 1.63 | 1.00 | 0.70 |
| 4L80E | 1.00 | 2.48 | 1.48 | 1.00 | 0.75 |
| Transmission Ratios | 1st to 2nd Ratio Drop |
1st Gear | 2nd Gear | 3rd Gear | 4th Gear | 5th Gear | 6th Gear |
|---|---|---|---|---|---|---|---|
| 6L80E / 6L90E | N/A | 4.030 | 2.360 | 1.530 | 1.150 | 0.850 | 0.670 |
Transmission Fluid Capacity (see also capacity of fluid in the converter here)
| Transmission (stock pan) | Number of Qts/L |
|---|---|
| Powerglide, TH350 (without converter) | 4 qts / 3,8 L |
| TH400, TH200-4R, TH700-R4, 4L60, 4L60E (without converter) | 6 qts / 5,7 L |
| 4L80E (without converter) | 7,7 qts / 7,3 L |
| 6L80E Fluid capacity with 258 mm converter | 10,3 qts / 9,7 L |
| 6L80E Fluid capacity with 300 mm converter | 12,6 qts / 11,9 L |
| 6L90E Fluid capacity with 300 mm converter | 13,8 qts / 13 L |
