8 speed complete conversion kit

Swap and drive

This full kit contains a 1HD series pre-checked, pre-filled and bench-tested ZF 8HP70 transmission, suited to the 80 and 100 series Land Cruiser. It replaces the stock A442F or A750F automatic and has the same input and output connections and the same length, so the driveshafts stay as they are.

Controls

We designed the controls around the Turbolamik TCU. It is easy to fit and set up and gives near-OEM control of the gearbox; we spent countless hours dialing in the shift settings for this application. The updated gear selector gives easy control: normal Drive for comfortable shifts, move it to the left for one of the pre-configured sport to off-road modes, and manual selection with + and - at any time. With a paddle-shift steering wheel fitted, up- and downshifting is always possible and returns to auto after 20 seconds.

Driving modes

• P1 Comfort
• P2 Comfort +
• P3 Sport
• P4 Sport +
• P5 Towing
• P6 Off-road, low range
• P7 Manual with narrow rpm limits
• P8 Manual mode

The selector comes with a bracket for the 100 series and a 3D-printed cover that matches the original centre console.

Wiring

Plug-and-play standalone wiring set with a separate waterproof fuse and relay box. The TCU needs rpm, accelerator pedal and boost pressure; these are already available in the 80 and 100 series, so the connectors tie into the OEM wiring. For 80 series models without an OEM TPS sensor (typically up to 1993 and manual models) we offer a TPS sensor and bracket in the DIY section.

Oil cooling

The 8HP70 is so efficient that the oil usually needs to warm up rather than cool down. The OEM oil cooler can be deleted; a heat exchanger on the side of the transmission connects to the coolant lines, often already available from the rear heater. Ideal fluid temperature is 60 to 110 degrees, which matches the coolant. Because the heat exchanger is fitted before filling, the transmission is filled and tested on our bench and needs no special fill procedure on site.

Built-in extras

Paddle shifters can be connected straight to the TCU; we have used MR2 and IS300 OEM steering wheels with success. A trans brake function is implemented as standard and can be left disconnected.