what cam lift will stock 15 flhx heads support
HDF Community Team
Joined: Jun 2006
Posts: 12,773
Likes: 2,603
From: san antonio
Hey DJL Looking for a cam only install 2010 FLHTK do you think the SE 585 would be ok , only asking as you indicated that stock springs support up to .600 valve lift , fuel moto said up to .575 cam is .585 I do not want to do other work , or do you think the 204 is still a better bet
EDIT: I just caught that you were referring to the SE585 cams, not the S&S585. So, I think it a toss up but still thinking the SE204 will work well at .510" lift; heads not much help after that. Mind what Kirby says about the OEM heads starting to flow backwards at .525" lift.
Last edited by djl; Mar 20, 2016 at 06:12 PM.
Banned
Joined: Sep 2009
Posts: 3,569
Likes: 624
From: deland,florida
just to let all know I did this build the way I said I was going to do it ..I did put the heavy springs in the heads and seals with no head work ..I did put the 58 mm on with 259
cams and 10.5 to 1 screamin eagle pistons and im very impressed bike runs great and is very strong ...my numbers are 105hp and 114 tq ....I did this build very cheap because im a shopper and I do my own work....
very little money spent with great results
cams and 10.5 to 1 screamin eagle pistons and im very impressed bike runs great and is very strong ...my numbers are 105hp and 114 tq ....I did this build very cheap because im a shopper and I do my own work....
very little money spent with great resultsNot buying it,lets see a chart
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Joined: Jan 2015
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From: amsterdam ny
take a look ...and its only a little 103..bigger is not always better boys
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HDF Community Team
Joined: Jun 2006
Posts: 12,773
Likes: 2,603
From: san antonio
I must admit that the peak TQ number is a surprise and the curve after 3000 rpms is not bad but 100TQ between 2500-2800 rpms on a bagger is more to my liking; JMHO. The low HP number is not a surprise though. The OEM heads cannot take advantage of the potential HP to be gained from the higher lift cams and the larger T/B; although the larger T/B may be the reason for HP breaking 100.
My point has been more "why bother" with cams and larger T/B which are designed to deliver HP but fail to take advantage by running OEM heads. I would expect to see HP numbers in the TQ range with head work and perhaps, a marginal increase in TQ, or at least moving the curve to the left a bit.
I just don't see the point of upgrading to a high lift cam and larger T/B and retaining the OEM heads; however, if 15flhx is happy, what I think doesn't matter.
My point has been more "why bother" with cams and larger T/B which are designed to deliver HP but fail to take advantage by running OEM heads. I would expect to see HP numbers in the TQ range with head work and perhaps, a marginal increase in TQ, or at least moving the curve to the left a bit.I just don't see the point of upgrading to a high lift cam and larger T/B and retaining the OEM heads; however, if 15flhx is happy, what I think doesn't matter.
Last edited by djl; Mar 22, 2016 at 03:30 PM.
Road Warrior
Joined: Aug 2007
Posts: 1,392
Likes: 43
From: South Australia
Good job,
my first build with stock heads did 98/115, it's rare for (near) stock heads to get over 100hp.
Earlier torque would be better though, mine is making over 100 at 2200.
Bigger is still better !! Ha ha
my first build with stock heads did 98/115, it's rare for (near) stock heads to get over 100hp.
Earlier torque would be better though, mine is making over 100 at 2200.
Bigger is still better !! Ha ha