billyflantos

iTrader: (6)

whats the maximum you can bore these blocks?

sixt9er

iTrader: (2)

I hear and understand, the max is 4.030". There have been guys saying that with the right block, you can get up to 4.060" and even 4.070" out of an iron 6.0l. I personally would not go that big though. Anything bigger than 4.030", you would definitely need to have the block sonic checked. Good luck.