What is the distributor cap order for a Chevy 283?

There isn't a single distributor cap firing order for a Chevy 283. The firing order of the engine itself is always 1-8-4-3-6-5-7-2, but the rotor in the distributor turns, and the cap's terminal arrangement reflects that rotation. Therefore, the distributor cap terminal order will vary depending on the distributor itself and its installation.

You must look at your own distributor cap to determine the correct firing order. The number should be printed on the cap itself. If not, you can typically find this by referencing the distributor number which will allow cross-referencing with a parts catalog or online database for the correct cap terminal arrangement.

Trying to determine it from just the engine firing order will be incorrect. The cap physically dictates the spark plug firing sequence.