The precision adjustable cam drive gear for the SEFI / SPI engines allows for +/- 10 degrees of timing adjustment. Four stainless steel socket head cap screws lock the gear in place. It
is CNC machined from lightweight 6061 Aluminum. Each line on scale represents 2 degrees of adjustment.
* At this time the SPI Adjustable Cam Drive Gears are no longer available. We may be able to get a production run made if we can get enough people to buy at one time, or a group buy.
