The 'E' Type Forum

I know there were post regarding this subject in respect of tyre size or differential ratios etc'. After upgrading to a 5 speed gearbox my speedo is 10mph adrift so when my speedo shows 30mph real speed according to my dash GPS speedo is 40mph. Who or how can this be addressed without performing the flag rotation count procedure.

Hi...whats your name..please try to put it in the signature area.......to re calibrate your speedo you will need to "flag/rotate"..contact one of the guage restorers...speedy cables etc then send off your speedo....Steve

Thanks.

Danny.