Quote:

There is a certain amount of trial and error involved, but this should help to get you in the ball park. There should be a # stamped on the slotted part of the advance mechanism. 13 or 15 is typical. Approximately 1/16 in. in the slots is 2*. eg. If you have a 13 stamped on the mechanism closing up the slot by 1/16 in. will result in approx. 11* in the distributor. That of course will result in 22* at the crank. Ten degrees more [ initial ] and you have your 32*. Lighter springs will quicken up the rate of advance. If you're going to race it more than anything else try to bring it all in by 1500-2000 rpm. On the street I shoot for 2000-2500 rpm. Keep your final drive gear ratio in mind and try to have full advance or close to it at highway cruising rpm.



I haven't taken apart the dist yet to check that number but was going to mess with it tomorrow. The engine is going in a 73 New Yorker with 3.23 gears so it's hardly a race car lol. With the 3.23's 65mph would be right at about 2500.
Where does full advance usually come in with the stock advance springs?