Quote:
Originally Posted by Option13
Had a shop tell me its "good." I am unfamiliar with timing so that is why I took it to a shop to have it checked.
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Buy a timing light. I hear the Harbor Freight unit is OK. Timing check is easy.
Clip the pickup on plugwire #1, and the power leads on the Pos and Neg terminals on the battery. Run the engine up to operating temp. Set at idle ~750 RPM. Disconnect the vacuum hose from the carb and plug the end with a golf tee. Now point the light at the Harmonic Balancer. It should flash everytime #1 fires. The timing marks will show where the ignition timing is set at. I like 12*. Stock setting was 8*, but gasoline isn't what it was in 1968. Rotating the distributor will avance or retard the timing.
A good Vacuum Gauge should not set you back much more than $20 at your local autoparts store. Tweaking the fuel/air screws, each one in turn for the highest manifold vacuum, will find your best fuel/air mixture.
Investing in tune-up tools will cost a lot less than shop time.