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I've been debating the best route when I update my old style cam plate and also change cams.

Do I go the SE cam plate upgrade & chain drive or go gear drive ?

I like the gear drive my concern is run out and maintaining it for the life of the motor. Will my run out change/ wear out of spec over time & miles ,does a fly wheel shifting affect run out ? I don't want to trade one time bomb for a bigger one.

I'm thinking S&S 509 / 510 kit chain or gear depending unless there's a better bumbstick for a stage 1 88.

Also how are the inner cam bearings that come in the S&S kits ?
 

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What affects runout is the crank scissoring, or the flywheels pivoting on the crank pin.

On the S&S cam instruction sheet, they say that B148 (Torrington) inner cam bearings must be used, so that's what they would have in their kits.

A Torrington B148 is a Torrington B148. (The better option vs INA bearings)
If you ask for the SE inner cam bearings at the dealer, this is also what you would get.
 

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The .509 is a VERY good 88" cam.
The .510 requires more compression to be effective.
Stay with the chain drives, and sleep easy.
Scott
 
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