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Old 05-31-2008, 01:46 PM
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Hi I am collecting my parts for my th400 rebuild and got a Tci input shaft/drum assembly.
Should I have it machined deeper for 6 plates?

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Old 06-01-2008, 02:42 PM
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you can not really machine the drum inside for more plates. the plates lug into the side grooves and the groooves only go so deep.

it is best to machine the piston down for max capacity. there are also thinner plates and steel plates to increase the clutch count.

Since the fwd drum is not a shifting clutch , thinner plates will not over heat
Dont worry how old you are... it is the mileage on your body that adds up.
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