: Sourced from salvage yards; the riskiest and cheapest route ($1,000+). These are best for short-term solutions where the vehicle's remaining value is low. 2. Verify Compatibility
: Only damaged or worn parts are replaced. While cheaper ($3,500–$6,000), quality and lifespan can vary significantly.
: Disassembled and rebuilt to original factory standards using new wearable parts. These offer high reliability and are often backed by a 3-year/100,000-mile warranty.
Before purchasing, determine which category of replacement fits your needs:
: A "long block" includes the cylinder heads and valve train, making it a nearly complete drop-in replacement. A "short block" is just the lower portion (block, crank, and pistons) and requires you to transfer parts from your old engine.
