Cam recommendations??
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Road Master
Joined: Dec 2006
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From: Simpsonville, SC
Cam recommendations??
I'm getting my parts together to do my 95 build. I have 10:1 pistons, hi flow heads w/ big valves and it's carbed.. Looking for a nice gear drive cam to get the big bagger going and have plenty of power on tap.. Any suggestions???
Outstanding HDF Member
Joined: Jul 2007
Posts: 3,410
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From: Knoxville, TN
My 1st suggestion would be to check your crank runout before buying those gear drive cams.
Who did the heads?
What do they suggest?
Have you discussed cams with them?
Without forum members knowing who did the head work, there's not a lot to go on.
Who did the heads?
What do they suggest?
Have you discussed cams with them?
Without forum members knowing who did the head work, there's not a lot to go on.
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Road Master
Joined: Dec 2006
Posts: 1,200
Likes: 3
From: Simpsonville, SC
John Sachs did the head work, they have 1.9/1.6 valves in them with high lift springs. He recommended using a 55G cam, but I think that's a bit too aggressive for a bagger. I think I need more low end than top end.
I didn't check crank run out, is that an issue with these motors?? It's only got about 9K on it..
I didn't check crank run out, is that an issue with these motors?? It's only got about 9K on it..
Outstanding HDF Member
Joined: Jul 2007
Posts: 3,341
Likes: 9
From: Woodinville, WA
No brainer. SE 203. Practically the exact same set up I have. The service manager at my favorite dealer would likely say 204 cam however - but only for carb'd (which you have) - so pick your poison. Damn I love my FatBoy tune.
ps - yes I realize that these are not gear driven. Never saw the point - still don't.
ps - yes I realize that these are not gear driven. Never saw the point - still don't.
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Road Master
Joined: Dec 2006
Posts: 1,200
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From: Simpsonville, SC
Is there no real benefit for going gear drive?? They're a whole lot more expensive.. I heard you get longevity and a couple extra HP out of a gear drive vs. chain.. True or no? I ran a gear drive once in a race car I had, it seemed pretty good...
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Road Master
Joined: Dec 2006
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From: Simpsonville, SC
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Road Warrior
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John Sachs did the head work, they have 1.9/1.6 valves in them with high lift springs. He recommended using a 55G cam, but I think that's a bit too aggressive for a bagger. I think I need more low end than top end.
I didn't check crank run out, is that an issue with these motors?? It's only got about 9K on it..
I didn't check crank run out, is that an issue with these motors?? It's only got about 9K on it..
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
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From: SoCal
So you trust the guy to do your heads, but over rule his cam recommendation, and think you can get a better recommendation here? People will respond without even knowing the characteristics of the head work. If you trusted the guy with your heads trust him on the cam. Your parts have to compliment one another, a great torque cam closes early, run that with a lot of compression and you have problems. You need a cam that has enough timing to allow the heads to flow. Higher compression allows for longer duration cams without so much low end torque loss. Personally I use the cams my head work guy recommended.
Grand HDF Member
Joined: Dec 2007
Posts: 4,999
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From: Bay Area
So you trust the guy to do your heads, but over rule his cam recommendation, and think you can get a better recommendation here? People will respond without even knowing the characteristics of the head work. If you trusted the guy with your heads trust him on the cam. Your parts have to compliment one another, a great torque cam closes early, run that with a lot of compression and you have problems. You need a cam that has enough timing to allow the heads to flow. Higher compression allows for longer duration cams without so much low end torque loss. Personally I use the cams my head work guy recommended.
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