The 1965-1967 Corvette 6000 RPM Tachometer Redline Gauge Face limit was based upon the amount of horsepower the Corvette produced. The 6000 Redline was set for all 327 cubic inch 350 horsepower Corvettes for 1965-1967 and the 1967 427 390 and 400 horsepower cars.
Applies to all manual and automatic transmissions.
Applications 1965:
Applications 1966:
Applications 1967: