* Year: The year of manufacture significantly impacts value. Older engines, especially those from classic muscle car eras, can be highly sought after.
* Block Condition: Is the block cracked? Are there any significant imperfections? A pristine, unmolested block is worth far more than one that's been heavily modified or damaged.
* Internal Components: What's the condition of the crankshaft, connecting rods, pistons, camshaft, etc.? Are they stock or aftermarket performance parts? High-performance parts significantly increase value.
* Cylinder Heads: What type of cylinder heads are installed (e.g., stock, aftermarket performance)? The condition and type of heads significantly impact performance and, thus, value.
* Modifications: Has the engine been modified? While some modifications increase value (e.g., high-performance parts), others might decrease it (e.g., poorly executed modifications). List all modifications, including carburetor, intake manifold, etc.
* Completeness: Is the engine complete (including all accessories like intake, carb, distributor, etc.)? A complete, running engine is worth more than a bare block.
* Running Condition: Does the engine run? A running engine is worth considerably more than a non-running one. If running, how well does it run? Compression test results would be helpful.
* Documentation: Any paperwork showing provenance or service history increases value.
How to Determine Value:
1. Online Resources: Check online marketplaces like eBay, Craigslist, Facebook Marketplace, and Hemmings. Search for similar engines with comparable specifications and condition to get an idea of their asking prices. Pay close attention to "sold" listings, not just "for sale" listings.
2. Forums: Join online forums dedicated to classic cars or Chevy engines. Members can provide valuable insights and help you assess the value based on your engine's specifics.
3. Appraisals: For a truly accurate valuation, especially for high-value engines, consider contacting a classic car appraiser specializing in automotive engines. They can provide a professional assessment.
In short, there's no magic formula. You need to meticulously document the specifics of your 350 Chevy engine and then compare it to similar examples on the market to arrive at a reasonable value.
