Hamilton Cams - 07-c-188/220S

Upgrade your Cummins engine with our 188/220 Steel Cam, engineered for improved torque, horsepower, and long-lasting durability.
RPM Range: 1700-4500
Drops EGT 200-300
Increased power we have seen 40-60hp depending on fueling and turbo.
Duration at .050″ of lift 188 Intake, 220 Exhaust
We only offer warranty on our cams if our lifters and springs are used.

Modification Required:
For it to be “drop in” on a 12v you will need no more than .018″ piston protrusion and at least .055″ valve face depth with a standard head gasket and a 99 intake centerline. On a 24v you will need no more than .018″ piston protrusion and at least .038″ valve face depth with a standard gasket. If you do not meet the minimum requirements for piston to valve clearance, don’t worry, you can still run an oversize head gasket or cut valve reliefs.
Although this is considered a drop in cam it is important to check clearances
For the Steel version you will need at least two bushings installed in the cam tunnel, otherwise the steel could eat into the cast iron block
We always recommend new lifters when changing a cam.

Applications:
Drag strip
Stock class pulling

Break in:
To make sure that you have no issues during break-in, follow these few suggestions.
Make sure that the cam has a Liberal amount of quality assembly lube applied
DO NOT let the engine start without oil pressure
When this is a new engine, be sure to put a liberal amount of assembly lube in the oil pump and prime the oil filter
Be sure to change the oil after you have done your break-in procedure. When the filter and oil system are already primed, engine will get oil pressure much faster than if the oil is changed at the same time.
Disconnect the fuel system and spin the engine with the starter until oil pressure can be read or until oil is coming out of the rocker arms.
Once oil pressure has been verified, let the engine start and run until up to operating temp
Adjust valves then you are cleared to abuse your engine. Enjoy the added airflow
if you need to re-torque or “hot-torque ”the head, do so before adjusting valves. When you retorque the head, the valve lash setting, so it is important to set lash last."