360 internal balancing act. Help!!!

[dragdart]

Howdy folks.

Boy, I sure hope someone out there cn help me with this one.
I have a mid-70s 360 that I am having internally balanced. I have the "spec balanced" crank with the hollow 1st and last journal. Despite this I might still have to add mallory metal. So my question is first wether or not I will even need to add metal, and if so, where approx. I realize that this will all be done while spinning but I wondered if anyone had an approx. so I can keep the crank from jumping out of the machine.

P.S. My bobweight is 2059g.

[jimm II]

In answer to your question I had my 360 cast crank internaly ballanced, used fluid dampener on nose, and flywheel was neutral balanced alumium 3 disc. stock steel rods with KB pistons .030" over 2eyebrows /piston it took five pieces of mallory to ballance crank also had to have some of counterweights cut. hope this will be of some help.....

[Hammer 74]

There is no real way of determining where to put the stuff unless you spin it. There are variations in the balance of the crank, balancer and flexplate/flywheel that all have a seperate place to add or subtract weight to and from that make for no pre-guess guesstamites.