273 or 318 or both help

callmebob said

Ok thanks. That's what I was hoping I could do. I read somewhere that if I used the 273 crank I would have to get it balanced for the 318. So do I use the balancer for the 273 or 318 if the are balanced different. I do know I can use all the other parts including the distributor so I wont have to change the wiring. I will go with the Pertronix ignitor 1381a to replace the points and condenser, we did that on a 71 Dart.

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I would use the 273 balancer, since it has the timing marks in the correct position for the 273 timing cover (which uses the iron water pump with a driver's side inlet, so you can use your current radiator; which means the timing marks are on the passenger side vs. the 318's driver's sode marks). Balancing the new (different) rotating assembly would be preferable, but if you're basically doing a stockish refresh you could conceivably get away without a balance job, your call on that.