GPI LT NA Stroker Cams for 416”-454” combos
- All must run High RPM Spring kit unless used with a plastic manifold which is not recommended.
- Stg 2 and Stg 3 cams need much more compression and calculations are assuming E85 or C85 fuel. Not recommended for Pump gas usage.
- Custom cams are available for the rare instances where one of these 3 is not optimal.
Choose your spec
Nice pump gas 416 and 427 cam, good at 12.5:1 compression as a nice street driver cam that will make great under the curve power and support up to about 7400-7500 RPM with a High Ram Style Manifold. RPM will be about 400-500 lower with MSD. Recommend a 4F-5FPX (4500-5500) range with this combination
This cam is a very versatile 416-427 cam intended for the spicier NA setups that are in that 13:1-14:1 range. Will drive peak power up a few hundred RPM vs stg1 and will be good to 7600-7800 with adequate valvetrain setup. Only Recommended for high Ram intake applications. 5FPX converter recommended (5000-5500 Range)
This cam is more of the all-out NA cam for the 416-454” engines. On 416-427 you will want to be closer to 15:1 for this camshaft. On the 454” you will be ok at 14.5-15:1 range. Only Recommended for high Ram intake applications. This combo is good for 7600-8200 RPM with an adequate valvetrain setup. This combo will want a 5FPX to a GPI 5000 Converter setup (5000-6500 range).