71-Series Transmission

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The 71 transmission is Nissan's strongest transmission. It was fitted to L-series six cylinders, FJ engines and more. 71 series comes in four different lengths, however a stumpy version is the same length as a Datsun 1200 transmission though obviously much larger around. The stronger 71B replaced the original 71A designs around 1980.

Lengths

Long extension housing is the most common.

Overall Transmission Assy Length
Long tail: 31.5 inches
Short tail: 26.3 inches

Stumpy

• 71-Series Transmission
  • Skyline DR30 (FJ20 engine with 71C)
  • Datsun 720 pickup USA (71B)

Skyline DR30 transmission

71A

F4W71A Long housing

• 1969-1971 240Z 4-speed

FS5C71A Long housing

• Removable bell housing
• Datsun Roadster with U20 bell
• Datsun Roadster with R16 bell
• Datsun 240Z early USA dealer installed with L-series bell

71B

F4W71B (1974-1982) long housing. Rear extension of transmission has bolt-on cover plate.

• 1972-1973 Datsun 240Z
• 1974 Datsun 260Z
• 1975-1978 Datsun 280Z
• 1979 Datsun 280ZX
• 1974-1978 Datsun 620
• 1979-1982 Datsun 720
• 1975-1980 Datsun 810/Maxima six-cylinder

FS5W71B

• Datsun 720 stumpy/shorty
• Datsun 720 long tail

71C

FS5W71C
Nissan 300ZX (non-turbo, turbo uses 90-series)
early Nissan D21 (Hardbody) 

VG-series (V6)
Z-series 

Interchange

Like transmission parts interchange:

• 71A bell housings
• 4-speed to 4-speed
• 5-speed to 5-speed
• 71B/71C front cases

Complete transmission units of the same length interchange. For example, replacing a shorty FS5W71B with a shorty FW471.