flat tops, IIRC 1.90 intake, 1.58 exhaust. chambers are around 88cc. this is from memory, so it probably aint right, but its close. the 253 cam makes it a dog. again IIRC, last one i checked, compression was around 9.2. bottom line is to make one run, you have to work heads, raise compression and install different cams.
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truth and equality for all. this is still AMERICA!
Cams in mie were CVO 258 I've heard the combustion chamber was anywhere from 98 cc to 101.5 cc depending on who you ask. My owners manual say's the compression is 9:1.
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06 CVO 113 Ultra
SE MVA Heads
SE 251
SE 50mm TB
SE 10.5:1
ThunderMax ECM
Zipper A/C
AIM 92T VPC
D&D Fat CAt
3.37 Final Gearing
CVO253's are the stock cams. Maybe yours was changed? Last set I had done at Hillside was 94 cc's. Those bikes really wake up with a recipe like claydbal said. Usually from the factory the valve springs hit the rocker boxes. Check the crank runout as well.
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Hillside Cycle custom head work
S/E 4.375 forged crank Darkhorsed
Axtell 117 cyls and pistons
Mikuni HSR48
S+S Super D manifold
Black Boarzilla
Wood's TW9BG cams and KF325 filter
I bought the bike new and changed out the cams my self they were stamped CVO 258. These CVO heads are quite a bit different then staock TC88 I'm not sure spending money to re-work them is smart or just get a good set from S&S or R&R.
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06 CVO 113 Ultra
SE MVA Heads
SE 251
SE 50mm TB
SE 10.5:1
ThunderMax ECM
Zipper A/C
AIM 92T VPC
D&D Fat CAt
3.37 Final Gearing
Linear Mode
