Bought a 64 Dart and am rebuilding. Pulled the cam and it is an Erson. Called their tech line a few times but they will not call me back. Their website is no help. The numbers on the cam are 320F. 47L. B23. 10. Anyone have an old book or knowledge that can help me identify this cam? There is no serial number.

As I understand it, they have changed ownership, and moved-- so, you may be dealing with a whole new crop of people, and they might not have kept the records....

Hope this helps...

Thanks

Greg

The best way is to get a micrometer, a dial caliper, and a degree wheel and map the lobes. Lift, duration, and lobe separation can all be measured.

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Casually looking for a Clifford hyperpak intake for cheap.

Lobe lift is easy to measure and gives us some "clues". on what this cam grind could be.
As noted, best to just mock-it-up into an engine block and take all the measurements or send it off to a cam grinder who has a "Cam Doctor" machine, to measure it for you.
DD

Thank you all. My machinist deals with them on a regular basis and got the information.

What are the "numbers"?
What Erson grind is it?
DD