* Generation/Design: The 2.8L V6 engine was produced over many years and underwent significant design changes. Early versions differed substantially from later ones in terms of internal components, block casting, heads, and even the overall architecture.
* Carbureted vs. Fuel Injected: Early versions were carbureted, while later versions were fuel-injected, leading to performance and emissions differences.
* Output: Horsepower and torque figures varied significantly across different years and applications. Changes in engine management systems, camshafts, and other components influenced power output.
* Internal Components: Pistons, connecting rods, crankshaft, and other internal parts varied over time, impacting reliability and performance.
* Heads: The cylinder heads varied, affecting airflow, compression ratio, and ultimately power and efficiency.
* Accessories: The placement and type of accessories (alternator, power steering pump, etc.) could also differ.
* Specific Applications: A 2.8L in a S-10 pickup will likely have different components and tuning than one in a Cavalier.
To accurately compare two 2.8L Chevy engines, you'll need to know the exact year, model, and application of each engine. Then you can compare their specifications, which might be found in factory service manuals or online automotive databases.
