* Specific Model: Dodge offered several chassis and body styles for conversion vans in 1985 (e.g., based on the B-series van). The chassis itself had different weights.
* Conversion Company: Numerous companies customized Dodge vans. Each company's additions (seating, interior features, optional equipment) impacted the final weight.
* Options: Features like extra seating, upgraded engines, air conditioning, and other options all added weight.
To find the curb weight of a *specific* 1985 Dodge conversion van, you'd need to find its original documentation (owner's manual, perhaps a build sheet if available) or consult a resource specializing in classic vehicle specifications. Even then, finding exact curb weight might prove difficult.