This car is the very first factory light weight car built on the assembly line at Flint, Michigan Chevrolet Assembly. It's still not known how many of these cars were built - somewhere between 50 and 57 are the numbers commonly used. The owner believes there were 50 built, based on a shipping document from an engine plant showing 50 Z-11 engines shipped to the Flint Assembly Plant.
Zora Duntov and his group of engineers developed the 427 Z-11 engine and body package for drag racing. The Z-11 427 engine was the first 427 cubic-inch production engine offered by Chevrolet in a Regular Production Order (RPO) car.
The base price of a 1963 Impala was $2,774. Adding the price of the RPO Z-11 option of $1,240 brings the total price just over $4,000, not including destination charges, taxes, etc.
This car was raced by Ronnie Sox (of Sox and Martin Fame). It was used as their match race car and was billed as the 'World's Fastest Z-11,' turning low 11.20 ET's. It in fact was capable of times as fast at 10.80 ET in the ¼ mile and indeed was extremely fast for its day. The car has factory aluminum hood, fenders, bumpers, brackets and other components.Also photographed at :