From:CJ e-mail:mathsci-A-hotmail.com
Subject:RE: Racing Mods ? Date:Wed Nov 6 14:54:11 2013
Response to:18923
I think you are looking for this - posted under Stuff / Oddities

http://harleyhummerclub.org/stuff/oddities/165-modifications.pdf

harleyhummer.com sells a "Puckett Hop Up Data" sheet that documents some of the work Lewis Puckett did. Is supposed to have some of what you are looking for - might be worth the $10...

http://harleyhummer.com/PARTS/index.php?act=viewProd&productId=855

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Is there a resource for racing modifications for these motors ? I thought I saw a reprint of factory mods here but I can't find it now.I'd also like to see the dimensions of expansion chambers that have worked with these.