I am running 1200 jugs, domed pistons, 551 cam, with 883 heads, stage 1 carb.
WHAT bike engine is being used?
a 1200 or 883 to start with?..
I did a 883 to 1200 using wiseco 10.5/1 pistons keeping my 883 stock heads and no caming at all ..
Just carb mods using old style 1200 needle, smoothing carb slide edge, jetting proper for SE slipons and SE air.....
A real beast/883 1995 year of sportster
ALSO what are you looking for in changing to 1200 heads?
just to go 1200 heads or???
You can machine the 883 heads out to 1200 but 883 were great for the LOW END TORQUE for me.
I don't understand the cams on a sport so I'm no help there
You can also increase the size of the valves in 883 heads with porting should make a difference also
I'm just curious and may be of little help....
signed....BUBBIE
you can look under my name(click on) "BUBBIE" and find post and threads that pertain to sportster ,,,, may interest you...