The Hamilton Cams 07-C-178/208 Camshaft stands out as one of the most efficient options tested for Dodge/RAM Diesel engines. Ideal for moderate street trucks, it delivers optimal fuel economy compared to other Hamilton Cams. Its design, featuring a short duration and wide lobe separation angle, minimizes overlap between intake and exhaust valves, distinguishing it from other Hamilton camshafts.

Through testing, this camshaft has demonstrated significant airflow at lower engine RPMs, facilitating quicker turbo spooling. However, it sacrifices some power above 2600 RPM when compared to Hamilton’s larger cams, though it still surpasses stock cam performance. Particularly beneficial for high-altitude driving, heavy towing, or maximizing everyday engine efficiency, this camshaft pairs well with the intake from a 97-99 centerline.

While its efficiency benefits are notable, this camshaft also appeals to common rail engines equipped with larger single turbos or featuring enlarged valves and ports. Such engines often experience reduced low RPM response, which this camshaft addresses by aiding in earlier turbo spooling.

Considered a drop-in replacement, it’s crucial to verify proper clearances. For 1998.5-2002 models, ensure no more than .025″ piston protrusion and at least .038″ valve face depth with a standard gasket. For 2003-2007 and 2013-2018 engines, maintain .018″ piston protrusion and at least .038″ valve face depth with a standard gasket. If clearance requirements aren’t met, options include using an oversized head gasket or cutting valve reliefs. Additionally, zinc additive is necessary.