Thread: Balance or not to balance

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i balance just about every thing that leaves the shop .less its stock job were they do got want to spend the money were the stock pistons were replaced by the next size bore on jobs like this. if i rebuild the rods i balance the rods . many think they buy a crank kit thinking its. balance with parts you buy in kit .DONE ? ...some companys. mass balance for target weight. kits can be off more then 20+ grams easy. you are better if the counter weight is a bit heavy then to lite for bob weight . when the crank can not support the bob weight then we add heavy metal to crank. i just balanced a 598 were i fitted the crank for heavy metal this common with big stroke cranks. the 454 is exernal balanced and they all get balanced from my shop . i have seen dampers not have the same target weight from other markers for same year engine .not just the mark 4/5/6 enigne do not have same with flex plates weight on fly wheels or dampers were a gm .may not be the same as a pioneer. scat. and other seen it . some 454s the dampers get worn out and same with fly wheel s as this is key part of the balanced and counter weight for crank. the 454 i build get new dampers and fly wheels .i balance all of 454 to new parts at time of build. there alot more to this. i do many cranks in a year .jerry may post on it as well he balances many engine as well . time for me to go to work and balance a 427 bbc