Here's the setup from my NA9 equipped 1970 Z28. On a Camaro equipped with NA9,there was a special Holley carb which had a vent line attached to the front of the carb from the charcoal canister, and a special carb heat shield that was exclusive to the LT1 Z28. Note that it is shaped quite differently than the heat shields that came on some Chevy big blocks.
