on a set of 906 truck vortecs. Will I need machining? If, so does anyone make a brand of springs that dont require machining?

Originally posted by jr71c:
on a set of 906 truck vortecs. Will I need machining? If, so does anyone make a brand of springs that dont require machining? =
You might, some guide bosses are larger at the bottom of the guide & some aren't.

If they aren't cut not that I know of.

Also with the Z28 spring you should change to early retainers, they have more clearance.