
Do not attempt this unless you are confident that you can undertake a task of this kind and you have access to (or can make) the special tools, dummy shafts etc that you will require. With RPM reduction or speed increase, our 26 or 36 overdrive allows a. Please regard this video as a guide showing how the work can be done, If you choose to do this work yourself please take all necessary steps to ensure your safety. We offer a quiet, easy shifting experience with our dependable unit, guaranteed to make your driving experience a pleasure For the Model A’s, the installation kit includes new front and rear torque tubes, drive lines, speedo cable extension and gear, shifter and linkage. There may be other ways to do this work but this is John's way. He was trained by Laycock DeNormanville to rebuild their overdrives. Once assembled John will bench test it for functionality. Guys run these units in 1000+ horsepower street/strip cars and they survive. The engine is a stock 350, the trans is a TH400.
REBUILDING THE LAYCOCK OVERDRIVE INSTALL
John will usually install a relined cone clutch (200). It is a Laycock overdrive, I don't really know if it's the same as the Volvo unit, but it is rather small, 6' diameter. I usually buy Victoria British overhaul kit p/n 2-2698 box everything and send it to John Esposito for reassembly.

At the time of making this video John has 44 years of experience of rebuilding Rootes Gearboxes. For the 'D' type o/d I usually strip it down, clean & inspect.
REBUILDING THE LAYCOCK OVERDRIVE HOW TO
This is the final instalment covering how to correctly rebuild a Laycock De Normanville Overdrive unit and includes some tips on troubleshooting to prevent problems. Press Release () - BURTON ON TRENT, England - Many Austin Healey’s are fitted with an Laycock de Normanville A-Type overdrive on the back of the gearbox which provides an extra ratio available in 3 rd and 4 th gears, operated by flicking a dash or gearstick mounted switch.

This is the last in a series of five videos of John 'The Box' Roseby rebuilding a Sunbeam Alpine (Series V) Gearbox and Overdrive.
