LC Engineering upgraded cam buckets re-locate the valve shim from the top of the bucket to underneath the bucket. When the shims get re-located, you will have to change the shim to these under bucket style shims. LC Engineering offers these shims in sizes ranging from 1.45 mm thick to 3.30 mm thick (in .05 mm increments).
Application Note:
*LC Engineering also offers a full line of stock valve shims as well.
*Some older buckets may use a 9.5 mm shim in the retainer itself. We also carry a full line in that size as well.
Contact our Tech Support Line for further information at 928-855-6341.