How much do i need the heads milled and what gaskets should i use to get to around 11:1 CR with my stock ported heads and stock bottom end? And with that will i need my intake milled to match or will i be ok with how it is?

Thanks
Nick

 

Impalla head gaskets will bump up 10.5:1 to 11.0:1. Why do you want the extra compression? I think there is only around a 2% hp gain.

 

extra compression is a great way fo building extra torque and HP.

Your going to have to have you heads decked a bit for that. Make sure they check the intake after they cut the heads. We've been having a few leaky intakes lately.

 

Hey every little bit counts

And how much do i need them cut down?

 

You can also try the Mr. Gasket head gasket - it's a little thinner then the Impy. I think .026

 

Depends on how far your piston is downhole,CC's of valve reliefs and chamber size and gasket bore size and thickness.
Generally about .008-.010=1CC in chamber size when ya cut the heads.

 

I have the impy gaskets that are .028" and my heads were milled .010" for about 11:1.