Destroking an Engine

The 302 was not destroked. The Chev, 302 was a regular production engine (67-69) of 302 cubic inches. People always toss that "DZ" stuff out there but "DZ" was just the code for a 69 302. 67 -68 302s were code "MO", but you never hear anyone say MO302....

The only reason it was ever built was to meet Trans Am requirements. But, it was a 302 from the factory and offered in a production car.

For something to be destroked, it would have had to start life as something bigger. The 302 was never bigger than a 302. Destroking was not allowed in Trans Am until 1970.

Now the 305ci engines ran in the Challenger TA and AAR Cuda (Trans AM race versions), were destroked 340s.