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[Cheeko]

Is the 04-05 103 motor any different than a newer 103 motor?-I thought it was a stroker motor but maybe i am wrong-or are they all stroker motors?

[hd-dude]

Its the same bore and stroke but the heads and cams are different from the 03-06 103"'s

[Ironhorse]

Its the same bore and stroke but the heads and cams are different from the 03-06 103"'s

Which brings up a question I meant to ask you last week Jim when I picked up my bike. What are the differences between the OEM 103 HD heads, and the heads on the CVOs? What has been done to them, and how much more or better do they flow?

[HD Street Performance]

Very different
Open chamber, 1.9 vs 1.85 in valves, 1.625 vs 1.565 ex valve and a different port package. Not much better without porting. The ports were first used on EVO 80" heads.

[hd-dude]

The CVO 103 heads are very different. Huge chambers and larger valves.

[DCFIREMANN]

HEMI Chambers vs  Bath Tub Chambers. Even though I have a built CVO 103, I prefer the Bath Tub Chambers. But that is just me.

Be Safe

THE DAWG