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Hamilton Cam 12 Valve 188/220 Camshaft Combo

Hamilton Cam 12 Valve 188/220 Camshaft Combo

Our Price: $1,375.00

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Product Code: 07-CC-12V188

Description Technical Specs

What’s included:

  • 188/220 Camshaft (fits 89-98 12V Cummins)
  • Heavy duty pushrods (500-750 hp)
  • 165 Beehive Valve Springs
  • Retainers and locks
  • Lifters/tappets


  • RPM Range: 1700-4500
  • Drops EGT 200-300
  • Increased Mid Range power
  • Duration at .050″ of lift 188 Intake, 220 Exhaust
  • Upgraded valve springs for up to 4500rpm

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.


  • all around performance grind
  • Larger single , or set of compounds
  • Weekend warrior
  • 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.
  • 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:

188/220-109 Lift Duration Timing Timing C/L TDC

Cam Lift 0.3100 188.0 -5.0 13.0 99.0 0.0340
Valve Lift 0.4278 188.0 -5.0 13.0 99.0 0.0470


Cam Lift 0.3200 220.0 49.0 -9.0 119.0 0.0300
Valve Lift0.4288220.049.0-9.0119.00.0400

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