Ballancing a 1973 340

nm9stheham said
You have a 2 choices:
1. Just setup the damper and flywheel with the proper external imbalance weights and bolt them on. BUT...BUT...BUT... if you have bored the block and swapped pistons, then a factor called 'bobweight' has changed, and theses standard external imbalances won't be right.
2. To do this per normal balancing procedures, pull the engine, and dissassemble the bottom end. The rods and pistons are balanced against each other per certain procedures, and once that is done, then the bobweight factor is known. That factor is then used with the crank, flywheel, and damper assembled to balance the crank.

Sorry to be the bearer of bad news.

Hey, I think I'll initially go with option A. The 340 is completely stock so no issues there. :D What are these external imballance weights you speak of?

The issue for me is the the Fly Wheel I have is suited to the set up I have which is all Australian. The Tooth number for the Starter etc. I dont know if the Fly Wheel is a different dimention to the US one? If I could keep it the way it is then Id be much happier. But the Fly Wheel I have has already been externally ballanced for the Hemi 6 engine used in Australia. Im not sure how Id go about doing a back yard ballance to just see if I could live with it till I get my other 340 correctly built.