Distributor keeps adding advanced without stop?

LivewireBlanco said

Im wondering if it's not my cheapo timing light. I know the balancer is right cause I marked it at tdc when I assembled it. It's running great and not over heating. My old distributor had 16.5 marked on it so this is a slight improvement but I'll get the FBO plate eventually.

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Maybe not.

I used a later model points (reman) distributor with FlameThower III and initially got numbers approaching 60. It must have been a lean burn dizzy originally. Regardless the 383 was not happy, welded up the diagonal slots just using a simple printed from the internet paper 360 degree template with a hole cut in the center for reference on the total mechanical advance. The particular motor setup as configured does not like part throttle with the vacuum advance so I blocked it with a BB/ball bearing. Total is now 35/36 with one light spring with 18 initial and the 292/509 motor loves it. Full advance by 2000. Controlled my temps at cruise and the motor has great response across the board.

Make sure the dizzy you have is compatible with the FBO plate before buying one!