Have been trying to find info on a 68 corvette a friends father bought back in 68 69. The small data plates next to the shifter stated..... 427 cubic inches experimental L-88 horsepower N/A. Engine had aluminum heads, and I thought it had an aluminum block. This was the fastes car I have ever driven! I never have forgotten the experience. I have been trying to find info on this experimental L-88 engine. Any info would be appreciated.