Value of 67 Cuda 273/235 no.s matching engine

If it is not a running engine, then break down the parts.
Special parts: Valve covers, carb, intake, exhost?, Pistons, cam

Regular old standard 273 parts:
Block, heads, crank?, oil pan, front cover, harmonic balancer.

Some folks can't give a 273 away

Ebay price of the special parts and that will give you a number.