454 Vacuum Diagram

[beamn7]

CA requires it to meet that vehicle model year emissions OR, if you swap the engine with a later one, it must meet that engine model year emissions. You can not install a engine that is a earlier model year than the model year of the vehicle. If you take a vehicle that was equipped with a smallblock and install a big block, it will require all the emissions equipment of the model year of the engine (not the truck but must be same model year or newer than the truck) and will be required to be inspected by a CA smog referee to verify the installation prior to smogging or obtaining registration. You can most likely change engine sizes if within the same engine family without requiring a engine swap cert (say going from 305 to 350, etc) since they are mostly identical and as long as you keep ALL the emissions equipment that the vehicle was originally equipped with. If the smog guy sees the vin calls for a 350 and under the hood is a 454 and no engine swap certification sticker from CA air resource board it means instant failure = no registration.... CA is VERY strict but............if you do it right, no problem to pass.

Or........................you can just register in AZ like 93fatbottom!