220 hp (forged pistons, ported heads, racing focus).
Yenko offered different "Stages" of performance for the 164-cubic-inch flat-six engine: 160 hp (up from 140 hp). Yenko Stinger
Very rare, with 100+ built in 1966, plus about 25 in 1967 and a few more through 1969. 220 hp (forged pistons, ported heads, racing focus)
Specialized race tunes reaching up to 240–250 hp. ### ⚡ Interesting Facts 220 hp (forged pistons
190 hp (high-performance camshaft, compression increase).
Don Yenko sought to create a competitive SCCA D-Production racer when the Corvette proved too heavy for the class, targeting the Shelby GT350.
It began as a 1965–1967 Chevrolet Corvair Corsa .