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Help w/ XS400 engine modifications

13750 Views 7 Replies 5 Participants Last post by  Sidney Franklin
Anyone modify an XS400 for improved performance? Are cams available? Any OEM parts that are common? Does an XS500 engine fit?

Thinking valve job, and mill the head for a little more compression. Aftermarket Trumpet slip-ons, new jetting. Nothing crazy, just a little more power.

Thanks,

Sidney Franklin
Bloomington, IL
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