Does anyone know what the compression would be using flat top s/e pistons and 95inch big bore kit with stock heads from harley... I already have andrews 21 cams

 

On the build I did to my Dyna years ago, I had about 10-1, but I also used thinner head gaskets...

 

http://bigboyzcycles.com/TwinCamComp.htm

 

Thanks looks like 9.1 with my andrews 21 cam... I wonder if this is all worth it. I'm not looking for crazy power but I would like some more

 

should be more like 9.4 your going to use a .030 head gasket instead of the stock .045 and then have your heads decked to 82cc and you will be at 9.65 static and 9.25 corrected 190 ccp and you will be ready to rock. Lots of low torq.

 

OK thanks guys

 

I'd go with a stock (.045") head gasket WITH those 21s. In my 95" I'm running 24Ns, SE Flat Tops and a .030" head gasket, and the engine cranks over a lot harder than when it was stock. If you still want to use a .030" head gasket, you might want to consider adding compression releases.

 

Thanks. So ur running 21n cams with 95inch flat tops? How do u like the power? I have the Cams now I'm not sure if the 95inch would add enough power to be worth the cost

 

I saw just now the screaming Eagle book says the kit I'm asking about with flat tops are 9.4 compression looks like there's 3 pistons and the flat top is the basic setup

 

You can look in the dyno section and see what other got with their builds..