Chevrolet's third-generation inline six was introduced in 1962 (two years after rival Chrysler introduced its Slant Six), and was produced through 1988. Although the exterior dimensions were similar to the previous stovebolts, this generation was lighter and had a different cast-in bell housing pattern. Manual transmission bellhousings, automatics, and starter motors became interchangeable with both small block and big block Chevrolet V8s. The cylinder dimensions were shared with Chevrolet's contemporary small-block V8, as well as with the "153" inline-four.
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