valve lash reshim

The below instructions assume you evenly unbolt your cams and incrementally torque them in order to not snap them.
1) Remove shims and read each measurement on the shims (or measure thickness with a dial indicator [pictured]), input data in each cell of Shim Size.
2) Install camshaft and torque your cam cap bolts to spec.
3) Input recommended low clearance # from your cam card or service manual in "Recommended Intake" or "...Exhaust" entry box.
4) Measure clearance with a feeler gauge between all shims according to your service manual (see note 1) and input data in "measured clearance" column rows. Look at total height (see note 2).
5) See shim size in "Nearest Shim" column and the associated part number in column "L".
Want it more precise? Click "Perfectionist mode" and follow the extra steps above the table!!
Note 1: Usually the back of the lobe (the farthest side from the largest side).
Note 2: The total height of "shim" + "measured clearance" is what you're looking for. The feeler gauge measurement is thrown off by the "space above" your feeler gauge. The feeler gauge that slips in will still have a gap above it. If your 0.150 feeler gauge slides in but 0.175 does not, then your true measurement can be anything between 0.150 and 0.174. This can lead you to purchase the wrong shim. Be a perfectionist! Check the "perfectionist mode" and swap shims at least 2x by following the extra steps that appear above those tables.