Bobweight for Mopar-Perf partnr. P5007256 4-inch stroker crank

Everybody is kind of saying but then not really. There is no set bob weight. You have to weigh all the parts involved, rods, pistons, pins, rings, pin locks if equipped, and add for oil. If a shop is asking you for the bob weight they don't know what they are doing, get your stuff out of there now.