According to one of our inside sources, the upcoming 2019 Ram Heavy Duty Cummins engine will remain at 6.7-liters of displacement. This is likely to be an all-new engine which according to our source will feature a Compacted Graphite Iron (CGI) engine block.  Current 6.7-liter Cummins-powered Rams use a standard cast iron block which has … Continue reading UPDATED: Next Generation Cummins To Get CGI Block?