Originally Posted by Angrybird 12
The original design for the Z/28 used the smallest V8 available, it was a high revving small 302 CI 5L engine. Not a 427. If they ever bring out a new Z/28, I bet it will use the new Corvette 5.5L engine.
The LS7 is a high revving SB. The limit on CI was due to the Trans Am series and nothing else. As a matter of fact the Z28 in 1970 had a 350 CI engine due to a TA rule change.