Hamilton 178/208 Camshaft

Information:

RPM Range: Idle-4,000

Drops EGT 200-300

Meets 49 state EPA standards on 1998-2024 5.9l and 6.7l. We are working on 12v certification.

Duration at .050″ of lift 178 Intake, 208 Exhaust .290 intake lift .310 exhaust lift

Warranties will not be considered unless you use Hamilton cams Tappets and springs

Although we bill the 178-208 as an efficiency cam, we have made 1588hp at 4500rpm with a single S-488 on a 6.7L. It is plenty capable.

Modification Required:

For it to be “drop in” on a 12v you will need no more than .020″ 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 .020″ 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

We always recommend new lifters when changing a cam. 

Applications:

Towing applications

low rpm torque increases

helps spool large singles

Meant for increased all around efficiency  

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, we usually suggest not changing engine oil until after the engine is started.

When installed in a new engine, be sure to put a liberal amount of assembly lube in the oil pump and prime the oil filter

 When the filter and oil system are already primed, cam 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.

Do not let the starter run for more than 10 seconds at a time

Once oil pressure has been verified, let the engine start and run for five minutes at 1200-1500rpm then shut engine down

 If in a new engine, retorque head (you should see .003″ to .004″ more gasket crush which will alter valve lash. Adjust valves then you are cleared to abuse your engine. Enjoy the added airflow!