Where does this go?

Cougar Community Classic Cougar Maintenance Restoration and Repair
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Do have this right? On the shaft, before the timing cover.

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Yes it looks right. You might want to read about it in this link: https://www.cartechbooks.com/techtips/rotating-assembly-parts-interchange-for-small-block-ford/
Steven

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Thank you for that info. I am running a double roller, consensus is that it should not be used.