56-Series Transmission

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The 56-series is the stock Datsun 1200 transmission. It was fitted to all RWD B-series Datsuns with A12 and A13 engines. It is desigend to handle the torque of an A12 or A13, but for A14 and A15 engines a 60-Series Transmission is recommended. Standard models used 3-speed 56s, while most models used 4-speed versions. The Datsun 1200 GX-5 used a 5-speed.

For an overview of 5-speeds in general, see: 5-Speeds. Comparos, Ratio info, etc.

5-Speed

The 56-series transmission came factory stock in Datsun 1200 GX-5 models. They were also sold by Datsun Competition. This means they are very rare and hence expensive.

The advantages of the 56 over other 5-speeds is:

• It is non-overdrive, and hence desirable for certain types of racing
• It is a dogleg shifter (as is the 63 and 60L for A-series engine)
• It is light and small
• It bolts into any Datsun 1200 using factory parts. The other 5-speeds need slight modifications.

56a 5-speed swap Notes

A special rear crossmember is required:

• 11322-H7201 B110 transmission mount
  56a adapter <li>11322-H5700 B210 transmission mount <li>11341-H8500 B310 transmission mount. Requires 20mm spacers <li>11321-H1000 Insulator <li>11323-H7200 Stopper </ul>