In order to extract the full measure of performance and economy from your engine it is essential that it is properly tuned at regular intervals. A regular tune-up will keep your Camaro's engine running smoothly and will prevent the annoying breakdowns and poor performance associated with an untuned engine.
All 1967-74 Camaros use a conventional breaker point ignition system. In 1975, Chevrolet switched to a fully electronic ignition system known as HEI.
A complete tune-up should be performed at least every 15,000 miles (12,000 miles for early models) or twelve months, whichever comes first.
1981 models have increased their interval to 30,000 miles.
This interval should be halved if the car is operated under severe conditions such as trailer towing, prolonged idling, start-and-stop driving, or if starting or running problems are noticed. It is assumed that the routine maintenance described in General Information And Maintenance has been kept up, as this will have a decided effect on the results of a tune-up. All of the applicable steps of a tune-up should be followed in order, as the result is a cumulative one.
If the specifications on the underhood tune-up sticker in the engine compartment of your car disagree with the "Tune-Up Specifications" chart in this section, the figures on the sticker must be used. The sticker often reflects changes made during the production run.