#big block

The experimental canted valve heads for the DZ302 Chevy small block were a bold innovation in 1968, designed with Trans Am racing in mind. Known for its high-revving capabilities, the DZ302 gained a competitive edge with these advanced heads, pushing output to around 450HP during testing—likely more in a full race setup.

The design borrowed cues from Chevy’s successful MkIV big block, proving their engineers clearly understood the benefits of optimizing airflow and combustion efficiency. The inclusion of the Cross-Ram intake on the prototype made the package even more intriguing, enhancing the small block’s already legendary performance potential.