For the ultimate in racing transmissions, the Hall - Hewland close ratio, dog engagement transmissions are the item for your racing Datsun 1200. Using Hewland Mk. 9 gears, virtually any gear ratios are possible.

4-speed Close Ratio 56L Transmissions

Gearset were also available to convert the stock Datsun 1200 4-speed F4W56L into a 4-speed close ratio transmission. 4-speed 56L close ratio, "middle close ratio" Option #1 or 4-speed "ultra close ratio" Option #2. Complete used 4-speed transmissions in good operating condition from $1000. [Contact me to check in stock availability.]

4-speed ratios (1st-4th). Stock: 3.757; 2.169; 1.404; 1.00.  Option #1: 2.862; 1.908; 1.350; 1.00.  Option #2: 2.169; 1.593; 1.233; 1.00.

5-speed Close Ratio 56A Transmissions

Close ratio F5C56A 5-speeds are available for the Datsun 1200. These were know as the "Datsun Competition Close Ratio and the Ultra Close Ratio" racing transmissions in the United States.

The 5-speed 56A F5C56A (part 32010-H7251, option #1) was originally a factory option on certain RHD versions of the Datsun Sunny 1200. Option #1 works well for street, rally, solo or road racing applications. Option #2 gearing is closer ratio. The syncro mechanism is steel servo type, instead of brass cone in the 4-speed 56L transmissions.

Complete used 5-speed close ratio 56A transmissions in good operating condition from $2500. [Contact me to check in stock availability.]

Core 5-speed close ratio 56A transmissions, with broken gears, for use in areas where aftermarket gear sets are readily available (Spain, Portugal) from $500 usd. [Contact me to check in stock availability.]

Repair Parts: Tailhousing bushings, $50-150. Gears, syncros, parts: call for pricing.

5-speed ratios (1st-5th). Option #1: 3.757; 2.374; 1.659; 1.254; 1.00.  Option #2: 2.676; 1.691; 1.398; 1.182; 1.00.

Hall-Hewland Close Ratio Dog Engagement Transmissions

The Hall-Hewland transmission is the choice of racers with high horsepower A-series race engines or for any racer needing to change gear ratios to suit a particular track. 5th gear is direct drive 1:1. Every other gear, 1st through 4th, is changeable to any other Mk. 9 Hewland/Webster gear ratio availble.

The Hall-Hewland gearbox is also much stronger than any of the 56 series gearboxes, because of the larger Hewland Mk. 9 gears and by using larger "60" series gearbox components such as the modified main shaft and the transmission cases. Shifter location and driveshaft length are identical to the 56 series gearbox. Other than the rear transmission mount (which will have to be fabricated), the Hall-Hewland gearbox is a direct fit into any Datsun 1200 or B210. It is a direct fit into any of the 210 (B310) chassis.

Below is a photo of the first Hall-Hewland built by Dan Hall of Portland Oregon in the 1980s.

Hall-Hewland 5-speed transmissions, used, in good operating condition start at $3500. [Contact me to check in stock availability.]

Hall-Hewland (left) uses the smooth case from the 60 series transmission, with the additional oil sump added during manufacturing. F5C56A 5-speed (right) shown for comparison. Both are direct bolt on to any A-series Datsun engine. Notice difference in rear transmission mount location. Both the Hall-Hewland and the F5C56A will require modification or fabrication of  a rear transmission mount when placed in a Datsun 1200 chassis.