F-275 Dyno Cams 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.
Hemi/Clone
Specs
Engine: 196cc OHV Clone, 212cc Hemi Predator
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
Intake Exhaust
Open: 54.6 BTDC 92.3 BBDC
Close: 90.0 ABDC 53.2 ATDC
Lift: .278" .278"
C/L: 108.0 ATDC 110.0 BTDC
DUR @ 50: 258.7 Deg 258.6 Deg
212 Non-Hemi Predator
Specs
Engine: 212cc OHV Non-Hemi Predator
Recommended Class: Modified
Target (MAX) RPM: 8200-8400
Spring Pressure (In / Ex): 32 lbs
Valve Lash (In/Ex): .003"
Ignition Timing: 32 Deg BTDC
Profile
Intake Exhaust
Open: 54.6 BTDC 92.3 BBDC
Close: 90.0 ABDC 53.2 ATDC
Lift: .278" .278"
C/L: 108.0 ATDC 110.0 BTDC
DUR @ 50: 258.7 Deg 258.6 Deg
224 Predator
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
Intake Exhaust
Open: 54.6 BTDC 92.3 BBDC
Close: 90.0 ABDC 53.2 ATDC
Lift: .278" .278"
C/L: 108.0 ATDC 110.0 BTDC
DUR @ 50: 258.7 Deg 258.6 Deg