Home > Engine Parts & Fasteners >

Hamilton Cam 12 Valve efficiency 178/208 Camshaft Combo

Hamilton Cam 12 Valve efficiency 178/208 Camshaft Combo

Our Price: $1,375.00

Availability:: In stock soon. Order now to get in line. First come first served.
Product Code: 07-CC-12V178

Description Technical Specs

What’s included:

  • 178/208 Camshaft (fits 89-2018 Cummins)
  • Heavy duty pushrods (500-750 hp)
  • 165 Valve Springs
  • Retainers and Locks
  • Lifters/tappets


  • RPM Range: Idle-4000
  • Drops EGT 200-300
  • Better fuel economy 1-3 MPG+
  • Increased bottom end power
  • Quicker spool up
  • Duration at .050″ of lift 178 Intake, 208 Exhaust

Addition Information:

  • Due to its short duration and wide lobe separation angle, it also has the least overlap (when intake and exhaust valves are open at the same time) of any of our cams to kill in cylinder EGR for off-road engines that have higher drive pressure than boost pressure.
  • If you live at high altitudes, or are looking for the best efficiency possible, this cam will help you considerably


  • On a truck with a 62mm turbo and 80hp injectors, this cam picked up 40hp at 1700rpm due to the fact that it moves so much air at lower rpms and helps the turbo spool much sooner.

Modification Required:

  • For it to be “drop in” on a 12v you will need no more than .025″ piston protrusion and at least .055″ valve face depth with a standard head gasket and a 99 intake centerline. On a 98 – 02 24v you will need no more than .025″ piston protrusion and at least .038″ valve face depth with a standard gasket. On an 03 and up, it needs .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 (You can use our clearance calculator to make it a little easier)
  • We always recommend new lifters when changing a cam.


  • our most low rpm efficient grind that still makes power at high rpm if you have head work done
  • ultimate low rpm throttle response
  • Large or small 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
  • 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.
  • 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
  • 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. Re-torqueing the head changes the valve lash setting, so it is important to set lash last.

Cam Info:

178/208-110 Lift Duration Timing Timing C/L TDC

Cam Lift 0.2900 178.0 -10.0 8.0 99.0 0.0190
Valve Lift 0.4002 178.0 -10.0 8.0 99.0 0.0260


Cam Lift 0.3200 208.0 45.0 -17.0 121.0 0.0160
Valve Lift0.4288208.045.0-17.0121.00.0210

Related Products
Valve Spring Retainers 24V
Our Price: $99.00

Valve Spring Retainers 24V