340duster1
06-03-2003, 04:35 PM
To clear all of this up:
1) the 360 magnum is externally balanced
2) it is different from the "old style" 360
3) the 318 magnum is internally balanced
4) Mopar performance has a flywheel available, last time I priced it out it was $499Canadian.
5) The magnum engine book does not tell you how to rebalance a standard flywheel to work on the magnum engine. So don't waste your money on this book, I already wasted mine. I bought the book for that reason!
6) If you have a copy of the mopar chassis manual, it explains how to put the proper imbalance into a flywheel for a number of engines (but not the 360 magnum). The location or angle for the holes is shown in the book (use the regular 360) but the weight removed will be different. You will need to remove 2.28 oz of metal at a radius of 5.625".
I successfully rebalanced the flywheel for to work on the 360 magnum in my stock car. It sees lots of 6000rpm jaunts (twice per lap) and no vibrations.
If you need more details I can probably email or fax you a drawing.
