The Z/28's 302 was born from a rulebook. Chevrolet needed to stay under the...
Streetside Classics - Phoenix

The Z/28's 302 was born from a rulebook. Chevrolet needed to stay under the...

Date
09/02/2026

The Z/28's 302 was born from a rulebook. Chevrolet needed to stay under the SCCA's 305-cubic-inch Trans-Am ceiling, so engineers put the 327's four-inch bore with the 283's three-inch stroke and got 302. For 1969 that solid-lifter small block carried the DZ block code.

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