Aussiespeed custom steel lower supercharger pulley above 160mm or any 8 rib lower pulley up to 160mm. Our steel crank pulley will fit standard dimension harmonic balancers on Holden red, blue and black motors. We offer 8 rib or custom size pulleys up to 180mm in 6 rib or 8 rib. This is to fit standard Holden harmonic balancers with the snub/locator machined on the back of the balancer
This can only be used with flat faced harmonic balancers, it will not fit after market non standard dimension balancers like Romac, Powerbond without additional spacers.
The Harmonic balancer you use will need to have a step machined into the centre to locate the hub. This can be done by most machine shops for a minimal cost.
We can supply a balancer with this step already machined. They are listed in the Holden 6 section of our website.
The dampener on the left is red motor, the right is for blue and black as it has the thicker back edge and a different timing mark.
You will need to put a note in the comment section regarding outside diameter and number of ribs required