255 Grind, Welded Lobe, 224cc

255 Grind, Welded Lobe, 224cc
255 Grind, Welded Lobe, 224cc


  • The 255 will increase RPM and works very well with a stock carb and stock valve size.
  • This cam is welded for durability and comes with a compression release for easy pull start.

The 224cc camshafts have .550" main journal sizes. The cams have been clearanced between the lobes and feature narrow lobes. These modifications allow for rod clearance due to the 58mm stroke. The compression release is also thinner to clear the 58mm crank counter weight. These camshafts work with Harbor Freight Predator 224cc and Tillotson 224cc engines.


Engine:Harbor Freight Predator 224cc, Tillotson 224cc
Recommended Class:Mild Modified
Target (MAX) RPM: 7200
Spring Pressure (In / Ex): 18-22 lbs
Valve Lash (In/Ex): .003"
Ignition Timing: 32 Deg BTDC


Open: 47.5 BTDC88.0 BBDC
Close: 83.5 ABDC45.3 ATDC
Lift: .254".254"
C/L: 106.0 ATDC110.0 BTDC
DUR @ 50:236.1 Deg236.0 Deg
DUR @ 200:115.0 Deg114.5 Deg

Any camshaft that is not in stock will need to be manufactured. This may cause a delay of 5-7 business days.