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[PigRiderCVO]

I recently bought a 2006 CVO Ultra Classic from the dealership with 16k on it. The upgrades were pc3, Hooker Slip Ons, and Cams. Cams? I got no further description on the cams. The dyno sheet says 96/104 I think. I'll post a pic of it when I get home. I'm asking you guys for common cam upgrades for this engine. Something maybe that would get these results with the stock intake and filter.

[Unbalanced]

The stock cams were SE253's.

I recently bought a 2006 CVO Ultra Classic from the dealership with 16k on it. The upgrades were pc3, Hooker Slip Ons, and Cams. Cams? I got no further description on the cams. The dyno sheet says 96/104 I think. I'll post a pic of it when I get home. I'm asking you guys for common cam upgrades for this engine. Something maybe that would get these results with the stock intake and filter.

Before changing cams 2 recommendations:    1. check crank run out, 2. do a leak down test.    Many of the 2005-2006 era bikes had valve seal issues.  Once replaced they were good to go.

Zippers 575's were good upgrades the springs will handle these cams. 

Another good upgrade cam was the S&S 570 cams set at 10:1.   

You have to decide where you want the power and what type of power you want to really specific recommendation.   Low-mid power or mid-topend    duration, overlap and lift will be the concerns you have depending on power and limitation of not doing headwork and check/setting up the heads to handle different lifts.   As you only have a 43mm throttlebody that is going to limit the horsepower.    Many guys did headwork and put on a 51 -55 mm throttlebody.   

The 570's  43mm throttlebody, (sach's) headwork, 2-1 exhaust 10:1 compression on the hemi heads you have yield in the neighborhood of 100-105 hp and 115-119 torque.    More hp can be expected with a bigger throttlebody.

[PigRiderCVO]

Are my heads Hemi heads?
I lost a baffle out of one of my Hookers and can't find them anywhere online. I put a set of more restrictive Pythons on there and it felt like it had more go

[Unbalanced]

Are my heads Hemi heads?
I lost a baffle out of one of my Hookers and can't find them anywhere online. I put a set of more restrictive Pythons on there and it felt like it had more go

Yes the heads on the CVo’s for 2006 are Hemi heads approx 95cc with 1.900 intakes and 1.625 exhaust

[PigRiderCVO]

Okay, I hope I'm not bugging you but whats the difference between my 103 and my buddies 2011 103?

[Ironhorse]

Okay, I hope I'm not bugging you but whats the difference between my 103 and my buddies 2011 103?

Yours has Screamin' Eagle heads, and is stroked. The CVO 103 engine was one of the best ever made by HD.

[SIKBIRD]

Yours has Screamin' Eagle heads, and is stroked. The CVO 103 engine was one of the best ever made by HD.

^have heard the same thing about it being one of the best engines from several different tuners and motor builders...but then again I am partial.

[rigidthumper]

OG CVO103s came with SE253 cams, 3.875 bore flat tops, 4.375 stroke, touch over 9:1 claimed compression.

[Unbalanced]

Okay, I hope I'm not bugging you but whats the difference between my 103 and my buddies 2011 103?

Your Crank has full compliment rods the new 103’s use dickhead rods

Believe the older cvos were HD SE cranks and had if memory serves me heavier flywheels

[Ironhorse]

The new 103’s use dickhead rods

That's a name brand, right,...LOL!!!

[Unbalanced]

That's a name brand, right,...LOL!!!

Although it’s what they look like I guess you could also say you got screwed when they changed to them .  And the spec went from .003 to .012 for runout.   

[davidw221]

I agree with Unbalanced, change the Throttle Body, Air is king, much is noted about the exhaust, but very little is said about the Throttle Body, I changed mine and wow what a performance difference, you can add cams change exhaust, air cleaners, but the TB is the bottle neck, more needs to be said about the TB, thanks Unbalanced,

[HD Street Performance]

In the stock state of tune and even with a cam change I can't see the big need for a throttle body change. Air filter for sure. With head work picture changes. The 43 gets in the way then. The chambers are huge on the heads and they have about 8.6:1 actual,  not advertised, compression. Therefore cam changes while stock need to be done carefully to avoid killing low end torque. The redshift 575 works, works better with added compression.

[davidw221]

[davidw221]

I've had several friends who have the 114 and the 110, switched out the stock SE Throttle body for the HPI 55-58MM Throttle body. and they are glad they did, and they still have their warranty. I've always been told Air is king for performance, just by changing out the AC with the bottleneck in the Throttle body in my opinion doesn't do anything. I think it's an EPA think with Harley is the reason why they have the bottleneck in their units.