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Fisher · 07-02-2008, 10:26 PM

Did you put 258's in a bike with stock pistons ?Those cams are nice for a top end rush with a decent midrange but need higher compression than stock.The Harley high compression pistons will help a great deal but those cams aren't the greatest choice for an Ultra.Oh and HDI is indeed Harley Davidson International.A return to the thunderheader would be a good idea also.

07-02-2008, 10:26 PM	#3 (permalink)
Fisher Community Star Join Date: 2008, Apr 21 Location: Maryland Posts: 355	Re: race tuner question Did you put 258's in a bike with stock pistons ?Those cams are nice for a top end rush with a decent midrange but need higher compression than stock.The Harley high compression pistons will help a great deal but those cams aren't the greatest choice for an Ultra.Oh and HDI is indeed Harley Davidson International.A return to the thunderheader would be a good idea also. __________________ Go out on a limb,that's where the fruit is anyway......... Last edited by Fisher : 07-03-2008 at 08:38 AM.