Reply to "Optimal Timing?"

George PAdmin.

determining full advance is best done on a dyno under load, it will be the setting that nets the most rwhp, also the lowest exhaust temperature. Depending upon the heads, cam, exhaust system, etc I have seen Clevelands with as little as 32 degrees or as great as 42 degrees total advance.

initial timing can be determined at home. with the engine running, slowly twist the distributor in the advance direction until maximum idle rpm is achieved, this should also achieve maximum intake manifold vacuum. If you are running vacuum advance, leave it connected during this proceedure. The point of maximum idle rpm is your new initial distributor setting.

Your distributor will need to be set up so that the centifugal advance curve doesn't kick in until some point (a few hundred rpm) above your idle rpm.

George

1/4/059:01 AM

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