Changing speedo calibration -turbo 400

[VX-SS-383]

Ive got a 02 ls1 commodore with a turbo 400 just wondering
how i can correct the speedo? It was originally an m6
and has 3.9 gears.Has the PATC reluctor for turbo 400s similar to a 4l60e.

[VX-SS-383]

Changed reluctor from 17 to 40 and calculated diff ratio etc.
Its now within 1-2 klms according to my gps.

[joecar]

Does the PATC reluctor have exactly 40 teeth (same as 4L60E)...?

[VX-SS-383]

Yeah,works the same as the 4l60e just needs a different plug,very neat unit im very happy with it.

[joecar]

Cool :cheers: thanks for sharing.