The Chevy 2.2 engine is
not an overhead cam (OHC) engine. It's a
pushrod engine, meaning the camshaft sits in the engine block and operates the valves through pushrods and rocker arms.
The Chevy 2.2 engine was known for its simplicity and reliability, and was used in a variety of cars like the Chevrolet Cavalier, Pontiac Sunbird, and Geo Prizm.