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need help picking a cam

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Old Nov 13, 2010 | 01:49 PM
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hi i have a 06 flhx and i started picking up parts to do a motor build with so far i picked up a set of 95 cylinders se forged hc pistons 22868-00 and a set of se pro mcr heads now i need to choose a cam i am a very light guy who rides 0ne up and kind of wild but i do take a few long trips each year but most of the time im above 3000 rpm i was looking at the S&S 570g let me know what you think thanks again.
 
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Old Nov 13, 2010 | 02:03 PM
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I just got the 585G and I am very happy with it
 
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Old Nov 13, 2010 | 03:02 PM
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Originally Posted by bdyson250r
hi i have a 06 flhx and i started picking up parts to do a motor build with so far i picked up a set of 95 cylinders se forged hc pistons 22868-00 and a set of se pro mcr heads now i need to choose a cam i am a very light guy who rides 0ne up and kind of wild but i do take a few long trips each year but most of the time im above 3000 rpm i was looking at the S&S 570g let me know what you think thanks again.
You better make sure all that stuff matches up.I wouldn't want to see you waste your money, & don't get what you think you should have.Whose cylinders are you using?What are those heads & pistons rated at as far as compression wise? Are you going to do head work to the heads? What exhaust are you going to run? Seems like you do a mixture of riding with an emphasis on being over 3000rpm.I would go with a midrange cam that is compression matched to the heads & pistons!!!
 
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Old Nov 13, 2010 | 03:23 PM
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when i first started collecting parts i was going to build a motor that was on screamin eagles pdf file it was a 95 forged hc piston performance heads 10.5-1 comp. with there se 257 cam after getting everything but the cams i decided to go with gear drive cams but i dont want to get the wrong ones and have a ping monster with all that comp. and just pump gas
 
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Old Nov 13, 2010 | 08:24 PM
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gotta match the cam with the head flow numbers....then add the "other stuff "in to make a decision. I suggest you call a few cam manufactures like Woods, Andrews and then make your decision...or they will make them for you. Use the knowledge of the people that make them and let them direct you....
 
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Old Nov 13, 2010 | 09:27 PM
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Originally Posted by bdyson250r
hi i have a 06 flhx and i started picking up parts to do a motor build with so far i picked up a set of 95 cylinders se forged hc pistons 22868-00 and a set of se pro mcr heads now i need to choose a cam i am a very light guy who rides 0ne up and kind of wild but i do take a few long trips each year but most of the time im above 3000 rpm i was looking at the S&S 570g let me know what you think thanks again.
If the heads are 16952-08, that combination of a heads and pistons won't work. Static compression will be about 11.4:1 and a cam, like the 570, will put your cranking compression at about 224psi. Those heads havd small combustion chambers; about 76CC. Maybe I shouldn't say the combination won't work but it won't work well, will eat starters and batteries and rideability will be less than desireable.

Swap those pistons for a set of SE cast flat top pistons; you will get better service from the cast than forged; forged can be noisy if not fitted just right. Use a .030" head gasket and the S&S 570 as you have planned, get the exhaust right and a good tune and that combination will make 100/100 or better. The Andrews 54 would also be a good cam choice.
 
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Old Nov 13, 2010 | 10:40 PM
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what do you think about this set up with a worked stock heads instead of those se 16952-08
 
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Old Nov 14, 2010 | 12:43 AM
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Originally Posted by bdyson250r
what do you think about this set up with a worked stock heads instead of those se 16952-08
Much better choice. Just make sure that you set the heads up for the cams you choose, i.e., chamber volume and cam lift. Shoot for 185-190psi on cranking compression which is a function of the intake valve timing; the earlier the close event, the higher the cranking compression. Use a .030" head gasket (Cometic) to set squish which will mitigate against detonation and have the head porter cut singh grooves in the heads. You can use the HC dome pistons with stock ported heads; just won't require much decking to achieve the target compression.

BTW, not saying the 16952-08 heads are not good heads; just saying that the combination of those heads (small chambers) and the HC pistons is not a good combination. Like I said in my previous post; those heads with flat top pistons will produce good results. You can go either way and have a good runner.
 
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Old Nov 14, 2010 | 11:18 AM
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well did some lookin around and found some heads done by baisley they have 83.8cc chambers 175# springs so im gonna run a se 258 cam so i can save a few bucks not going with the gears gonna end up with 189 pounds of cranking compression
 
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Old Nov 15, 2010 | 05:00 AM
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Originally Posted by bdyson250r
well did some lookin around and found some heads done by baisley they have 83.8cc chambers 175# springs so im gonna run a se 258 cam so i can save a few bucks not going with the gears gonna end up with 189 pounds of cranking compression
You could contact Baisley and see what cams they suggest!
 
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