KinG Certified Performance — JAM J Edition
High-Performance LS/LSX Hydraulic Roller Camshaft
REAL POWER. REAL RESULTS.
The JAM J Edition is a proprietary KinG Certified Performance camshaft designed for serious horsepower, strong midrange torque, and sustained upper-RPM performance—not simply an aggressive idle.
Engineered for high-output naturally aspirated and positive-displacement supercharged LS combinations, the JAM J Edition features a high-lift hydraulic roller profile, wide lobe separation, a premium bronze-colored core, and custom KCP identification engraving.
Dyno-Proven Performance
Tested naturally aspirated on a 427 LSX at R&R Racing Engines in Evans, Louisiana, equipped with Frankenstein M311 cylinder heads and an Edelbrock Victor Jr. intake manifold.
Fuel
Peak HP
Peak Torque
93-Octane Gasoline
653.3 HP
576.7 lb-ft
VP M1 Methanol
679.9 HP
605.7 lb-ft
Corrected engine dyno results from the tested combinations. Actual results vary with engine configuration, fuel, and calibration. These figures do not represent camshaft-only gains.
Camshaft Specifications
Specification
JAM J Edition
Core material
8620 nickel-chromium-molybdenum alloy steel, carburized*
Camshaft type
Hydraulic roller
Duration @ .050"
238° / 2XX°
Valve lift (1.7 ratio)
.650" / .639"
Measured LSA
116.1°
Overlap @ .050"
13.9°
Measured advance
4.8°
Grind identification
LS-3310159-158232
Core material and heat-treatment specification subject to manufacturer confirmation. Exhaust duration remains proprietary.
Intended Applications
Designed for properly prepared 376–427+ cubic-inch LS/LSX engines, including naturally aspirated street/strip, drag-racing, and positive-displacement supercharged combinations. Centrifugal-supercharged and turbocharged applications require individual evaluation.
This is not a stock-engine, drop-in camshaft. Supporting modifications and professional calibration are required.
Supporting Modifications
Valvetrain: Matched performance valve springs, retainers, upgraded pushrods, compatible hydraulic roller lifters, and reinforced rocker assemblies. Verify preload, valvetrain geometry, piston-to-valve clearance, and spring travel.
Airflow: Performance cylinder heads, properly sized intake and throttle body or carburetor, and free-flowing headers/exhaust.
Fuel & Calibration: Fuel delivery sized for horsepower and fuel type, professional EFI or carburetor calibration, and verified fuel pressure and air/fuel ratios.
Drivetrain: Transmission, converter or clutch, rear gearing, tires, and cooling system matched to vehicle weight and intended power output.
Recommended Torque Converter Stall
Application
Starting Flash-Stall Range
N/A Street/Strip
3,600–4,200 RPM
N/A Drag Racing
4,000–4,800 RPM
Positive-Displacement Supercharged
2,800–3,600 RPM
Turbo / Centrifugal Supercharged
Custom matched
These are preliminary selection ranges. Final converter specifications depend on engine torque, transmission, vehicle weight, gearing, tire diameter, and intended use.
Installation Requirements
Professional installation, camshaft degreeing, clearance verification, compatible valvetrain components, and proper calibration are essential. Boosted applications also require consideration of compression ratio, charge temperature, fuel quality, and cylinder pressure.
KinG Certified Performance recommends a complete engine and drivetrain review before installation.
JAM J EDITION — ENGINEERED FOR PERFORMANCE. PROVEN BY RESULTS.