What does f20 mean on a Vauxhall gearbox?

Answer 1

Its just a gearbox code, F20 is usually paired with the C20XE engine found in Astra GSi, 16v Calibra's, Cavailers in the 80's and 90's. Smaller engines cars had the F16 and the Calibra and Cav Turbo had the F28. If u add a zero to the number this is an appox as to the amount of torque the box can take. So F20 would be around 200ftlb of torque and the F28 280ftlb. Migweb is a good forum for vauxhall research.