Hamilton Cams 188/220 Cast Cam

Information:
 
RPM Range: 1700-4000
Drops EGT 200-300
Increased Mid Range power
Duration at .050″ of lift  188 Intake, 220 Exhaust
 
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. 
 
Applications:
 
Used in daily drivers
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
Intake 
 
 
 
 
 
 
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
 
 
 
 
 
 
 
Exhaust
 
 
 
 
 
 
Cam Lift
0.3200
220.0
49.0
-9.0
119.0
0.0300
Valve Lift
0.4288
220.0
49.0
-9.0
119.0
0.0400