ZZ4 installation on a 1971 Corvette I have decided to write this because of the numerous posts that always come up on Corvette Forum. Your installation may vary due to options, transmission and year of your car so this is a very basic installation paper. ZZ4 Configuration: The engine itself comes with everything you need […]

The 6 speed manual transmission in 1989-1996 Corvettes was produced by German automotive components company ZF Industries http://www.zf-group.de/. The Corvette Owners Manual clearly states that this transmission does not need service, but the transmission fluid level should only be checked and kept full. A bit of research confirmed that ZF does not share this recommendation […]