[Enoch]

The first year for the 400 behind a solid lifter Big Block Vett was 69. Although Zora was photographed testing a 68 Vette prototype Z-L1 white convertable with an M40. With slicks I belive it was running low 10's-high 11's.

(I wanted to add that you could get the 400 in a 68 Vett up to 400 horse but not in a solid lifter big block)