On the distributor, one wire goes to the MSD ignition does the other go to ground or does it need voltage?

What is the firing order on a 225?

I have lost my spec sheet for my cam, can someone guide me on how to figure out what my timing should be? 38 deg. seems to stick out to me for some reason...

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1-5-3-6-2-4 firing order. not sure on the msd specs

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-- Mister Perkins --

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I'll assume you're using a magnetic pickup distributor as points distributors only have one wire. Both wires need to be connected to the MSD box and nothing else. If you've lost the MSD instructions they are available on MSD's web site.

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Joshua