GM Automatic Transmission Dimensions

Transmission Type Case to External Housing Overall Length Bellhousing to Mount
POWERGLIDE - SHORT 15 1/4" 24 1/4" 19 1/2"
POWERGLIDE - LONG 15 1/4" 27 1/2" 20 1/2"
TH-200 & TH-200C 27 5/8" 27 5/8" 20 1/8"
TH-250 21 5/8" 27 5/8" 20 3/8"
TH-350 SHORT 21 5/8" 27 5/8" 20 3/8"
TH-350 LONG 21 5/8" 30 5/8" 20 3/8"
TH-400 SHORT 24 3/8" 28 1/4" 26 3/4"
TH-400 LONG 24 3/8" 34" 28"
200R4 27 3/4" 27 3/4" 26 7/8"
700R4 23 3/8" 27 3/4" 22 3/8"
4L60 23 3/8" 27 3/4" 22 3/8"
4L60-E 23 3/8" 27 3/4" 22 3/8"
4L80-E ??? 31 1/2" 30 3/8"

Courtesy: Richard Milkiewicz

GM Overdrive Transmissions

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Measurement A B C D E
200-4R 27-11/16" 27-11/16" 27" 3-3/4" 19-1/8"
700-R4 30-3/4" 23-3/8" 22-1/2" 3-3/4" 20"

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Transmission Pressure Side
125/125C (3T40) Bottom
180 Bottom
200/200-4R Top
325/325-4L Bottom
350 Bottom
400/4L80e Bottom
440-T4 (4T60) Bottom
700-R4 (4L60) Bottom