My thoughts:
?
Bubbie, did you put the 255 cam in your lot 09 Road Glide
The SE255 is a BIG enhancement for a stage two 96" bike and will do even greater in a 103..
I have SE255's in My 09 FLHR 96" and use SE slender taper adjustable P-rods.
The low end power is really felt.
The intake "Close" of the Stock HD cam is 30* and the SE255's is 25*.
This earlier "Closing of Intake Valves" makes More compression HELD into the motor.
The LATER closing of intake valves , say Like 40* make the NEED for More compression to make up for the LOST compression of the Later KEPT OPEN intake valve.
Cams ARE a Give and Take. The BIGGER cams as some WANT( with Much Later intake closing) Installed in a stock 96" OR 103" will do More Harm than Good IF Not done properly by Upping the compression to MATCH or REPLACE the Lost compression in cam durations...
I always Look at the intake CLOSE numbers of a cam to see IF it is a Low End torque style or If more compression is needed to make it so.(Give and Take)
One other cam that many builders Suggest in the stock 103 and adding manual compression relief valves with a Street Port on the heads is the 48H. It has a similarity to the SE255 but Just a little longer "out" power curve (working higher RPM than the 255's).
On a SG, I think I would go for the 48H as its intake close is a little latter than the Se 255 cam at 29*. Giving you a little more RPM before it Drops off.
On the 96" FLH's touring, SE255.IMO
Being you are going 103 OR already Are and the later 29* close Will help in "Not" going too High with the static compression.. Ideally 180 to 195 max. 200 and above at sea-level Might become a problem with Heat and premature Spark Knock in these STROKED TC motors. Causing kick-backs and hard starting,,,, Bad for the starter and stock Compensator.
Just My Way
signed....BUBBIE
