Cam break in during cold weather?

David66dart said
Good idea. Thanks much! yeah my friend said the main reason that it could be bad was because it had a higher chance of running lean but i don't think the more dense cold air would effect it that much would it?

Not any concern, especially in Seattle. The carb will not tend to run lean at those temps or altitude, and any humidity will counteract the denser air. It just may need to be enriched to start. (See below.) If it has an electric choke, then you will need to kick it off 15-30 second after starting, but you will have the revs up so it will likely do that anyway. The cam break in process does not know if the engine is running lean or rich.

For timing, assuming you have a Mopar electronic ignition, set the damper on the crank so that the timing on the damper is about 10-15 degress to the left (CCW from) the 0 timing mark on the timing cover. Then, look into the distributor and set it so that one of the 'tangs' on the reluctor is just opposite to the 'groove' in the pickup. That will get your timing very close.

As noted, put 1/4 to 1/2 a cup of gas into the float bowl from a squirter bottle, and then put 1/2-3/4 bottle cap of gas down the carb throat just before you fire it off. If the ignition is hooked up properly, it will fire and run from that. If it initially wants to sputter and die due to being cold, then just keep the revs up and pump the gas pedal in quick, short strokes to use the aceelerator pump to enrich the mixture until things warm up and smooth out.