What is involved in balancing a motor for lighter pistons? It's just my fear of the unknown here. The KB pistons are actually cheaper than the FMs on Summit right now.
Simplified version....... There are 2 steps for a V8 or V6:
Balance the rods and pistons to each other. Facotry KB's are quite close and for most builds you can use them as is. Rod balancing requires a special jig to measure the big and small end weight separately and then match them across all rods. Once that is done, you compute what is call 'bobweight'.
4 bobweights of the proper weight are attached to the crank and its' spun on a special machine to tell the operator how to balance the crank. Most likely it wil be done by drilling metal out of the 2 end counterweights. With the 360, the external balance parts are needed to be part of that process: damper and flexplate and perhaps TC (depending on the felxtplate being used)
This is all SOP for a properly equipped machine shop. The costs that 70aarcuda quoted are realistic for most of the USA.
So I bet you do not save nearly enough to justify the lower KB price.
