69 Z/28 parts numbers

[Mark_C]

Part numbers in the AIM hardly ever line up with the numbers actually stamped, cast or ink marked onto the actual part in the car. For example the centerlink part number in the AIM is a single engineering number for an assembly which includes the inner and outer tie rods, and the adjusting sleeves. These numbers are different than the Service part numbers in the parts manual (and on the box the parts come in). I know this is kind of a bogus example because there are no numbers on any of these parts, but you get the idea. You need to step down a level (or more) in the GM engineering program and find the engineering documents that governed the creation of each individual part, which isn't going to happen. Then of course GM had primary and alternate suppliers for each part which have their own individual markings. You have to look at the original cars to see the trends as to what parts are used when during the production year.