Stage 1.5 One of our most popular turbo cams for the street, the 1.5 is emphasized for larger power increases (up to a 40hp over the factory roller cam) yet still maintains good street ability. Slight chop at idle, smooth predictable power delivery. .436" advertised lift. RPM range 2500-6000+rpm. We recommend this cam be purchased as a cam kit with our upgraded drop in springs to use the full rpm range of the cam. The 1.5 and all of our cams can be ordered custom ground for N/A (non-turbo) street applications, please specify at check out in the comments section if going in a non-turbo engine.