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Question about LT1 flywheel.

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Old Sep 6, 2007 | 02:11 AM
  #1  
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Default Question about LT1 flywheel.

So I just got a LT1 T56 and I plan to bolt it up to my externally balanced (400 balancer) 1-piece rear main seal 383 stroker.

Initially, I was under the impression/read that the LT1 was internally balanced and that I would have to buy an aftermarket flywheel. But now I am reading that it is externally balanced.

So the stock flywheel should have a marking for the "imbalance" and I can use that with my setup?
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Old Sep 6, 2007 | 08:15 AM
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From: Lee's Summit, MO (KC)
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A stock LT1 is actually both internal and externally balanced. The front (balancer) is internal, and the flywheel is external. The stock LT1 flywheel has a weight on the flywheel to balance it.
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Old Sep 6, 2007 | 10:17 AM
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Ahh, see I did not know that. So how does that work?

Anyways, I'm still not sure on how to go about this. I do not know what the 400 balancers imbalance (balance weight?) is and what the LT1 flywheel balance weight is. And if they will "match" up. Since the motor was balanced with the 400 balancer, I would like to keep that if at all possible, but I would get and aftermarket flywheel IF I absolutely have to.
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Old Sep 7, 2007 | 12:25 AM
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Nobody? I can't be ther first person to bolt up a LT1 T56 to an externally balanced engine.
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