Steve, couple things pop into my head with your setup. First, what drive shaft do you have? It needs to be able to handle the power/torque and RPMs you'll be turning with the LS3. Second, I would try to find a billet steel flywheel if it's lighter than the stock LS3 unit. I don't know what they weight. I have an AL behind my LT1. It's much better than the cast factory flywheel but it definitely doesn't hit the tires on launch like the stock piece did. This is do to the less inertia it carries which also helps it to rev quicker. Given the chance to do it again, I'd try for billet steel if available since it is lighter than stock but not as light as AL.
Good luck.
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Trey
Current ride: 2001 BMW 540iT soon to be manual swapped.
Former rides: 1979 Trans Am WS6: LT1/T56, Kore 3 C5/6 brakes, BMW 18in rims
00 BMW 540i/6: Suspension, wheels, and ACS bits.
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