67-72 Electric speedo

[eagleuh1]

Do you know if the 8000 rpm tach kits will work with a 2005 5.3. I can change the settings in the PCM if need be with HP tuners. Still haven't started on the speedo mod yet. Still working too many hours. Thanks. Jim

[ls1nova71]

Originally Posted by eagleuh1

Do you know if the 8000 rpm tach kits will work with a 2005 5.3. I can change the settings in the PCM if need be with HP tuners. Still haven't started on the speedo mod yet. Still working too many hours. Thanks. Jim

They should, it's just a tach after all. You will need to change the tach resolution in the tune from 6 to 3 to double the output since LS engines are set from the factory on 4 cylinder mode.