Just one more thing to ask. My motor is already bored 30. If it need's to be bored again what is the safe amount on the B 383 with out having heat issues. Know some block's have more metal in the area of oil ports and water port's. This will make me feel better with the build. Their is a crust ring at the top but till the motor shop get's it wont know how far we will have to take the bore. Thanks for any info and appreciate all the comment's on the cam shaft it was a lot of help. Blue69Runner.