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Discussion Starter · #1 ·
I dont hear a lot of discussion about this cam. Im considering using it in my 95" or possibly 98" build. Anyone using it? Thoughts and opinions greatly appreciated.
 

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have a pair in 103" glides making 120-118 and 119-116 relatively
 

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Discussion Starter · #3 ·
Otto,
That sounds very nice. May I ask what compression your running? Thanks
 

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10.4 both are injected
 

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How do you think this cam would work in a stock CVO 103 with a cometic 0.030 gasket which should get the compression up to around 9.4 or so? Or how about an S&S570?
 

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Otto:
At that compression ratio do you need compression releases? I like the specs on that cam but I will only be around 9.4-9.7 comp. I'm also considering the S&S570.
 

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New install Zippers 557

Just finished build, 95" with SE Heads ported and Zippers 557 cams on my 2002 Fat Boy. After break-in and 500 miles twisted throttle and really had to hang on, torque was unreal from 2200 rpm all the way up to 5800 rpm didn’t take it past 5800 rpm still want to get some more miles on it.
Had S&S 510 cams in before but they didn’t really come on until 3000 rpm. The 557 cams are very smooth with torque down low and all the way up to 5800 rpm. Great cams bike runs like I think it should, I just now need to get a dyno done to see what numbers I’m getting. Will keep you posted as to the dyno result.
:yes: ~!Awesome!
 
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