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Old 10-12-2019, 12:30 PM
BobC BobC is offline
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Join Date: Sep 2000
Location: Blue Springs, MO
Posts: 298
Default 455 HO crank balance experience

I got a recommendation for a shop to balance my rotating assembly. Here’s some pics of areas that are of concern to me. I will readily admit to not knowing squat about crank balancing. There are people that know on this site and I’d appreciate your input. The shop admitted they over drilled on one of the holes. To compensate they removed material from the flywheel/ flex plate mounting flange. The drilled hole diameter in the photo is so big that you can see the distortion in the side of the counter weight. I need to determine if this crank is now junk.

The pressure plate pic shows what the shop said was needed to balance it.

The shop balanced with the factory flexplate and after market flywheel. They both balanced the same which is good because I ordered the factory external balance flywheel.
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