Porting Heads?

[1fastgn86]

After porting heads do u have to install bronze valve guides? Can u run without them?

 

[J-B Racing]

Depends on how close you have gone to them. or in other words how narrow you made your Intake Guides. Because if you do not install Liners, and when your Guides need to be done, then the machinist that will wither install Liners or Ream them can Crack the Casting.


Good Luck