Seriously!!!

73AbodEE said
360s are all externally balanced from the factory. you need the correct weighted converter. OR the matching flexplate which you can order. you need to find out for sure if the converter you bought is neutral balanced or has been weighted some how. the 318 is internally balanced , thus the converter is not weighted nor is the balancer
or as doug says , you can get the weights and weld them on

if your people don't know any of this , you better clue them in before they go any further. if they didn't do any cutting and grinding on the crank counterweights, its just a matter of matching the external parts

Forgive my ignorance. I thought only the magnums needed the matching flexplate?

One thing the engine shop did say was that they would have to weld a bunch of weight to the converter to get it to balance and maybe that is why they were thinking I had the wrong converter.

I checked Summit Racing for info on my converter (B&M 10416) and it does say it is balanced. So they should have no problem with that and should just make sure to have the correct flexplate on the engine is my thought. Im just looking for what to tell them on Monday.

As for my (318 balancer) since it is not weighted I should be able to use that on the 360?

Thanks again for answering all my questions!