Okay, so I'm using the 4spd muncie for my 3800SC engine.

I am getting a flywheel that has already been machined down for the swap. What determines if it needs to be balanced or not?

I've looked at other threads and there doesnt seem to be a definite answer. Some people were saying they didnt balance it because its externally balanced or something? There were all sorts of answers but none seemed definite... I'm a little confused.

I'd like to clear this up. Please post with the answer if you have one!

Thanks,

Chris

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A good engine is balanced as a assembly, with the pistons crank rods and flywheel attached as a whole. So from the factory flywheels are drilled for minor amounts of weight, even if there externally or internally balanced. Its good idea to take what ever flexplate came off the sc motor and take the manual flywheel to a shop and have them balance the flywheel to the specs of the auto flexplate. U can get away without doing it, but it could lower the life span of the already weak bearings.

quote Originally posted by omnivec: A good engine is balanced as a assembly, with the pistons crank rods and flywheel attached as a whole. So from the factory flywheels are drilled for minor amounts of weight, even if there externally or internally balanced. Its good idea to take what ever flexplate came off the sc motor and take the manual flywheel to a shop and have them balance the flywheel to the specs of the auto flexplate. U can get away without doing it, but it could lower the life span of the already weak bearings.

Thats a winner right there, take your flexplate in with it and balance it like that.

Hmmm ok... so a machine shop can do this for me?

I know I know... noob questions

No its places that actually DO balancing.. I forgot where i got mine done, it was in Scarborough somewhere..

I took the flexplate in for him, as well as the pressure plate for the clutch.