This is my 2001 RK, MM, 95" Screaming Eagle Motor Build which dynoed 95Hp 103 Tq...
I want to build a Bigger, More Hp/Tq Motor...
Using my SAME EXISTING HEADS ONLY...
What Is A Bigger, Suggested Cam and How Big C/I Can I Go...

S&S 510G
SE Flat Top Pistons
9:7:1 Compression
.030 Head Gasket
82 CC Combustion Chambers
1.900 Dia. Intake Valve
1.610 Dia. Exhaust Valve
.590 Lift Beehive Valve Springs
7MM Valve Stems
195/205 Exhaust Port Flow
265/270 Intake Port Flo

 

You would havve to split cases to stroke it out to near a 103. To go even bigger you need to bore the the cases,also. on the other hand,you can go with a 2-1 exhaust and replace a few parts to take some weight off the bike......lighter is faster.

 

Without splitting cases you can go 98" .

 

Gonna get real expensive to go over 98" and from 95 to 98 isn't worth it. Ya got a pretty good runner now. Cost per hp really goes up from where ya are... and the MM FI really doesn't support much more either.

 

You would be $$ ahead, to trade vs dumping $$ into a MM bike.

Nothing but problems once you stretch the limits of that FI system.

 

I would try the S&S 570 cam first.

 

Maybe I did not do a good job of asking my question.....

I want help on finding a Bigger Cam that will match to the EXISTING Head Build that I already have..

Then I will do maybe 110/117 C/I Cylinders to Increase Motor Size...

I know with the MM FI, I have Limitations, but believe it or not I have a very Stable working FI System, that has given me 27,000 Problem Free Miles.... I have a DynoJet, PClll, Fuel Controller installed.

Please help me with a More Better, More Powerful Cam than the S&S 510G, that I am presently using, Which will work with my EXISTING HEAD BUILD...

 

If your 9.7 compression number is correct there aren't many "big" cams that will work well without a compression bump. Ya may get some more up top with Andrews 55s or S&S 585s??? But even they want more compression.

 

Looks like if you stay with S&S cams the 551 and 583 will work for you with your compression.

 

with that compression I might look at the SE254e cams,
or the SE255 cams