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This was discussed recently on another forum, and in general terms, I came to the conclusion that the criteria for the factory installation of a Holley carb on a 69 383 Road Runner (possibly Super Bee & Charger as well) was the cruise control option - which although rare, was indeed available. A/C did not seem to be a factor, as many A/C units were built with the AVS.

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There were two main factors that determined how the engine was assembled: A/C and transmission. This would dictate which carb the car recieved. Application also played a part. Speed control could be adapted to any automatic car.

The 897 (manual) and 899 (automatic) engine assembly A/C cars, with the exception of the odd one Dan posted, were 330 horse versions with Holleys. These assemblies could come in any 69 B body. The evidence indicates there was a change to an AVS on this assembly at some point but further research would have to be done to determine when there was a switch from a Holley to an AVS and how long the 899 engine cars came with an AVS.

The 925 (manual) and 926 (automatic) 383-HP 335 horse applications (found in non A/C Road Runners, Super Bees and non A/C four speed Chargers, Belvederes and Coronets) came with AVS carbs.

The 900 assembly (330 horse automatic no A/C) that came in Chargers, Belvederes and Coronets came with Holleys.