440 Source Balance Job

Can't say but I will add why would you pay that much for something and not check it?
Thanks. Around here, having a shop properly check a balance job costs just as much as having it done to begin with. Since you can't buy a 440source kit unbalanced, it just seems like a waste if you have to have it re-balanced - hence my original question.

Come on, man.....NOW you cast doubt to all that "trust" what we buy?
How am I going to feel comfortable about anything with this thought polluting my brain each time I build something.

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I'm not entirely joking though....I am usually the guy that trusts and rarely gets disappointed by doing so but you do raise a good point.
If a shop does check the balance, what would you expect to pay for that? If you're paying full rate, why not let the outside shop just do it and skip the service from the parts supplier?
If you're doing to have someone check another shop's work, how do you know the second place is any better?
This topic has the risk of a slippery slope where one starts to question everything.
Yeah, I know....one shouldn't be cavalier about precision engine builds but now I'm going to dwell on this and I'd rather have a pizza and have some time with the wife instead of obsessing.

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Exactly. The cost to properly check the balance would basically be the same as having it balanced to begin with. After having issues with a pre-balanced Scat kit recently, I'm a little nervous about using a balanced 440source assembly out of the box.

Years ago I bought a 500" kit and had them balance it. It was fine.
Did you have it checked by a machine shop? What all did they do? Or did it seem fine because it ran smooth and without vibration?