Anybody ever internally balance a 502 crank?

[69ttop502]

I know that my rpm level of 6700 or so it won't matter but my balancer looks shot and I will need a clutch when I put this thing back together so it would be easy but how much would it cost me to do, and given that cost should I do it. The motor only has 7500 miles on it and everything like the crank, block and pistons show this is true. Not sure why the balance lookd so bad, maybe it was from another motor.?

[clem zahrobsky]

i would guess it would cost about $400 to internally balance a 502 unless you have very light pistons and rods. it will take a lot of mallory metal(tungsten) :chevy