Our 6.4L VVT HEMI Performance NSR CHOPSTIX Camshaft is designed for the 6.4 Hemi Owner who is more focused on sound than maximum performance. This camshaft will yield gains of 30-40 WHP over the stock camshaft.� If you are looking for maximum NA performance for your 6.4, look into our MMP-ME-NA camshaft. 2800-3200 Stall Recommended for NAG 1 Equipped Vehicles. Works with the stock 8 Speed torque converter. Also works well in stick-shift cars *ADDITIONAL TUNING TIME OVER OUR OTHER CAMS COULD BE REQUIRED DUE TO INCREASED OVERLAP OF CAMSHAFT* Features: PN - MM-NSR-CHOPSTIX INT @50-22x EXH @50-23x LSA 110 Lift Intake: .596 Lift Exhaust: .559 You may also choose to get custom tuning for your new MMX camshaft kit here! NO SPRINGS REQUIRED! Will require Comp Cams Limiter and custom tuning.exhaust upgrades such as long tube headers recommended for best results. https://youtu.be/PUP9-hPYll0