307 NR Racing Series Camshaft - GX200, 6.5 OHV, & 212 Predator
307 Series: All-Out Racing Camshaft for Serious Motors and Big Tracks
With approximately .307 lift and 260 duration, this cam took 6 months to develop just right. This is the cam for 20+ HP motors. Special ramp designed for Honda GX200s running 12-to-1 or higher compressions with gas or methanol. 9,000rpm. Use with dual springs (required) and 1.2 rockers. 12-to-1 or more compression. 108 ICL, 107LS.
*Note: Use of rockers longer than 1.2 with dual springs may result in retainer-to-guide interference. Block or crankshaft may require clearance to clear camshaft lobes.
