Compression Ratio
Motor's a 383 with cola crank, diamond pistons, dart pro heads ported by Biddy Winward (NHRA Hall of fame engine builder
), thats all the basics I suppose. What do you guys think?
Great resource on compression and calculator at the bottom of the page. This calculator takes everything including the cam into consideration. I figured compression with this tool and had my machinist do the same, was dead on.




