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Old 12-09-2012, 04:32 PM   #1 (permalink)
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Horsepower Question

Does anyone know the horsepower of the twin cam 103cube in the 2013 Street Glide? I know it has 100lb torque rating but have seen no hp ratings....thanks.
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Old 12-09-2012, 06:17 PM   #2 (permalink)
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82ft/lbs Rear wheel torque and 65 RWHP per their chart in the 2013 parts catalog page 442.

Undersquare engine; Torque will always be > HP.
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Old 12-09-2012, 06:31 PM   #3 (permalink)
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Really only 65 HP? I thought a stock 88 had around 65HP.
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Old 12-09-2012, 06:35 PM   #4 (permalink)
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Really only 65 HP? I thought a stock 88 had around 65HP.
Rear wheel HP.
The HP that counts.
Crank HP is what the marketing dept thinks they can get away with.
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Old 12-09-2012, 07:46 PM   #5 (permalink)
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68.4 Hp according to cycle world dyno. California model.

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Old 12-10-2012, 07:22 AM   #6 (permalink)
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Do a header, stage1, and a tune. It will wake up a stock 103!
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Old 12-10-2012, 07:56 AM   #7 (permalink)
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Originally Posted by lightguy View Post
82ft/lbs Rear wheel torque and 65 RWHP per their chart in the 2013 parts catalog page 442.

Undersquare engine; Torque will always be > HP.

My motor puts out 117hp/111tq??? It is a 103 also, used a HD Stage IV "Race" Kit and prior to that my motor with a set of 255's and intake and exhaust with the dyno tune and it produced 92hp/109tq as per the above post, why then is my current setup not producing as stated, more tq, less hp with under square motors? I cannot get my iPad to post pics, but if someone wants to see it or post is, I am happy to send it with my phone or something..
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Old 12-10-2012, 05:57 PM   #8 (permalink)
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I believe you pete. That set-up with the 255's and 92hp with 109 tq sounds intreguing.
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Old 12-10-2012, 06:16 PM   #9 (permalink)
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Here's a dyno run on a totally stock 103 from Fuel Moto's website. The red line is the stock one. It shows 69.38 hp and 87.55 torque.

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Old 12-10-2012, 07:12 PM   #10 (permalink)
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Originally Posted by petew View Post
My motor puts out 117hp/111tq??? It is a 103 also, used a HD Stage IV "Race" Kit and prior to that my motor with a set of 255's and intake and exhaust with the dyno tune and it produced 92hp/109tq as per the above post, why then is my current setup not producing as stated, more tq, less hp with under square motors? I cannot get my iPad to post pics, but if someone wants to see it or post is, I am happy to send it with my phone or something..
I stand corrected. There is always an exception to "always" if you look for it.
I suppose you could put in high lift long duration cams and get more HP than torque with a race kit by wringing it out at the top end.
Why you would sacrifice the bottom end to do so is beyond me.
Its a two valve long stroke Harley not a Bimota.
To each his own.
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