How can I tell what weight my flywheel is balanced at?

I pulled the 390 out of the 61 Galaxie and am now trying to get all my parts together so that I can reseal it and put it in the 62 Galaxie. As I had been told the FE truck bellhousing I have is 5/8" deeper than the car bellhousing that came on the 390 so I will be able to use my small-block toploader with out any problems. I would also like to use the truck clutch and flywheel because the clutch is bigger and I am concerned about getting a starter to work with the truck bellhousing and car flywheel, however I am concerned that a truck flywheel from a 1969 360 would be balanced differently than the car flywheel from a 1961 390. I didn't even think to pull the harmonic balancer from the 360 when I took the clutch and bellhousing. Also the balancer from the 61 is small, basically a pulley. So what do I do, the last thing I want to do is put it all together and have it come apart at 3000 RPM

Daze,

Try asking your question over on the Ford FE motor forum. One of the guys over there might know the answer.

http://www.clubcobra.com/f71.html

Pat

Daze, the 360 is balanced the exact same as a 390 is. The only FE's that are balanced differently are the Merc 410 and the Ford/Merc 428. You'll be just fine using the truck flywheel. In fact that's what I have on my 390, with the truck 11 inch clutch.