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Time to upgrade my 103ho

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Old Aug 17, 2017 | 07:35 AM
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Default Time to upgrade my 103ho

Got a 16 Street Glide Special with the 103ho motor that's been stage 1'd (V&H duals) and I'm looking at upgrading the motor for better power on the highway and on hills.

I've thought about the whole package to bump it up to 110, but funds are not unlimited!

How much improvement can be had with cams and lifters?

Anyone been down this road with this motor already and able to share some experience?
 
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Old Aug 17, 2017 | 09:12 AM
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Originally Posted by bstorer
Got a 16 Street Glide Special with the 103ho motor that's been stage 1'd (V&H duals) and I'm looking at upgrading the motor for better power on the highway and on hills.

I've thought about the whole package to bump it up to 110, but funds are not unlimited!

How much improvement can be had with cams and lifters?

Anyone been down this road with this motor already and able to share some experience?
Drop in a set of Andrews 48 cams, add fuel management if that was not included as part of your Stage I upgrade and get a proper dyno tune. Lifters aren't going to add to the gain but replacing them with a set of S&S Standards would be a good idea. Inner cam bearings should be upgraded to B168s as well. Check tensioners and replace if they look like they have taken a beating. Check crank run out while the cam chest is open for future reference.
 
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Old Aug 17, 2017 | 10:13 AM
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Originally Posted by bstorer
Got a 16 Street Glide Special with the 103ho motor that's been stage 1'd (V&H duals) and I'm looking at upgrading the motor for better power on the highway and on hills.

I've thought about the whole package to bump it up to 110, but funds are not unlimited!

How much improvement can be had with cams and lifters?

Anyone been down this road with this motor already and able to share some experience?
Power duals or true duals?
 
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Old Aug 17, 2017 | 10:24 AM
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Power duals
 
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Old Aug 17, 2017 | 10:34 AM
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I dont have numbers just seat of pants opinion

On my '13 103 I added V&H Power Duals and Monster Rounds, Stage 1 air cleaner and PCV with their canned download that build. Ran great but i wanted a little more. Also it was still smooth unloped idle

I went back in later and added the Woods tw-555 cams and adjustable pushrods. More torque, my buddies 110 CVO cant leave me now, I have a lopy idle and it just feels better. Seems the andrews cam is similar and I believe andrews grinds woods cams to bobs specs.

Timing Lobe CL Dur .053 Dur .020 Val Lift Lift @ TDC Springs
48H Intake 13/29 98 222 257 0.548 0.153 Stock
Exhaust 43/15 104 238 273 0.548 0.163 Stock

555 Intake 21/41 242 0.555 0.189 Stock
Exhaust 43/19 242 0.555 0.178 Stock
 
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Old Aug 17, 2017 | 11:19 AM
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If you really get the itch for a full 110kit. Talk to some of our resident builders. You can get alot better power per dollar.

Ask me how I know ....
 
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Old Aug 17, 2017 | 11:35 AM
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LOL... I'll gladly bite. How do you know? And if you've done this with your 103, what did it cost you?
 
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Old Aug 17, 2017 | 03:59 PM
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Cams, headwork & compression.give is a idea of where your wanting more power,down low, midrange or up on top
 
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Old Aug 17, 2017 | 04:01 PM
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I'm no expert. But I feel like the amount of money you will spend paying someone else to change a cam and then retune would be better off saved up for either some additional headwork with that cam or going 107"/110"

I don't think a cam swap will get you where you want to be. The HO cam is pretty good with nice stage 1. Save your coin for another season.
 
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Old Aug 17, 2017 | 04:17 PM
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Originally Posted by prodrag1320
Cams, headwork & compression.give is a idea of where your wanting more power,down low, midrange or up on top
Mid to top...

Lots of long distance riding and want more oomph from 70 up. Also looking for more power going up mountain roads
 
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