Dyno Cams F-275 Racing Camshaft, Welded Lobe | GX200, Clones, and Predators
This cam has very aggressive ramps and requires an upgraded spring package, billet rod, and flywheel. Use bored stock or Tillotson carb. Great cam if you have a lift check requirement, but want maximum open valve duration. The lobes on this cam are welded for extra durability.
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.
Specs
Engine:Harbor Freight Predator 224cc, Tillotson 224cc
Recommended Class:Modified
Target (MAX) RPM:8200-8400
Spring Pressure (In / Ex):32 lbs
Valve Lash (In/Ex):.003"
Ignition Timing:34 Deg BTDC
Profile
IntakeExhaust
Open:54.6 BTDC92.3 BBDC
Close:90.0 ABDC53.2 ATDC
Lift:.278".278"
C/L:108.0 ATDC110.0 BTDC
DUR @ 50:258.7 Deg258.6 Deg
