That is what I was thinking,lol?But u dont need to bore to the block to get 383cuin,just a crank with a 3.75" stroke with proper clearence in the block,but since u are spending the money to get the clearence and what not but the stroke up to 3.85" and it will 396cuin which just happens to be a very power steet motormfrom my own findings.Well, as long as you are changing the bore and stroke, then I guess it WILL be a 383. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
But simply changing the heads will not increase the displacement.