big m pro iron big block chevy engine block,9.800,4.600,,raised .600,standard,steel

Dart re-engineered the big block, incorporating the most requested upgrades and special modifications into the Big M PRO blocks.With deck heights from 9.600” to 11.100”, a +.600” raised cam location, spread oil pan rails and bore sizes up to 4.600”, the Big M PRO gives you the versatility to build a wide variety of engine combinations