BILLET NR Racing Camshaft for GX200, 6.5 OHV, and 212 Predators HEMI - CHOOSE GRIND
The BILLET Camshaft for GX200, 6.5 OHV, and 212 Predators offers a range of grind options defined by both lift values (274, 307, 320, 356) and lobe separation angles (108°, 110°, 112°, 114°), each combination influencing engine performance in distinct ways.
**Lift 274 Series**: With lower lift, these camshafts paired with tighter lobe separations (108°–110°) enhance low-end torque and improve throttle response by increasing valve overlap for better scavenging at lower RPMs. A wider lobe separation (112°–114°) in this lift range softens overlap, promoting smoother idle and slightly better fuel efficiency. -
**Lift 307 Series**: Offering a moderate lift, these grinds with narrower lobe separation angles (108°–110°) provide a spirited mid-range power boost with increased valve overlap, favoring performance-oriented daily use. Wider angles (112°–114°) reduce overlap, improving drivability and stability at idle while maintaining respectable power. -
**Lift 320 Series**: Higher lift cams paired with narrow lobe separation (108°–110°) optimize high-RPM power by intensifying valve overlap, enhancing cylinder filling and exhaust scavenging. Increasing the lobe separation to 112°–114° trades some peak power for smoother transitions and better low-end characteristics. -
**Lift 356 Series**: The highest lift cams combined with tighter lobe separations provide maximum valve opening and aggressive overlap, making them ideal for peak horsepower and racing applications. Wider lobe separations reduce overlap and temper the aggressive nature, offering improved control and streetability while retaining strong top-end performance.
Selecting the right combination of lift and lobe separation enables precise tailoring of valve timing dynamics—balancing power, torque, and engine smoothness—to meet specific performance goals in GX200, 6.5 OHV, and 212 Predator engines.
- .274 Lift, 260 Duration at .050
- .307 Lift, 260 Duration at .050
- .320 Lift, 260 Duration at .050
- .356 Lift, 260 Duration at .050
.320 Lift or less will have a base circle of .815"
Lift larger than .320 will have a base circle of .760"
Only fits GX200, true 6.5 OHVs, and hemi style Predators. Will not fit non-hemi (old-style) Predators.
