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Old 12-05-2007, 06:43 PM
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Correct 3-4 stack up?

I am using the Alto Red Eagle Power Pack 3-4 kit in a 89 4L60 and would like to confirm that this is the correct stack-up. Replaced the stock stepped backing plate (stepped on one side) with the .125 provided with the kit used (8).062 frictions with (7) .078 kolene steels. I ended up with .040 between the backing plate and the snap ring. Alto recommends .025 - .040 clearance and ATSG book says .060 - .080.

3-4 apply ring.
.125 apply plate (in place of the stock stepped plate).
friction
steel
friction
steel
friction
steel
friction
steel
friction
steel
friction
steel
friction
steel
friction
backing plate (stock)
.062 snap ring

Just wanted to run it by the Pro's on the board to be sure.

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Old 12-06-2007, 01:03 PM
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Just for anyone who might be interested, I spoke to Alto an they said this set up and clearance was good.
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