These billet camshafts from Mace Engineering have been designed to work in conjunction with the factory timing chains and engine components, so you are only required to replace valve springs and retainers. We source these from Australia, then machine them to accommodate the LF4/LF3 vacuum pump. We also regrind the fuel lobe to match our Tapout Fuel Cam
These camshafts have .420/.420” of valve lift using the OEM 1.68:1 followers. Duration is significantly increased to 226/226° @ .050”. During our testing with OEM turbochargers we saw nearly identical gains of 69 peak whp on both 93-octane and 116-octane fuels. Validation was performed on a 2016 ATS-V with intake, exhaust and LPFP modifications. Car was remote dyno tuned before and after the camshafts installation.
Unlike other aftermarket LFx camshaft sets on the market, these include the proper machining required to drive the mechanical vacuum pumps that are specific to the LF4/LF3, and the HPFP lobe has increased lift to increase your HPFP volume by approximately 25%. All new AC Delco camshaft seals are included. Fuel system modifications, stronger valve springs and retainers and custom tuning are required with these camshafts.
We recommend several special tools for your camshaft swap, all of which are readily available online.
- EN-48313 timing chain retention tool (left side)
- EN-49982 timing chain retention tool (right side)
- EN-39313 spark plug port adapter
- EN-46106 flywheel holding tool
- EN-46110 valve spring compressor tool
Custom tunes and any performance parts that could affect vehicle emissions are intended for off-road use only and not to be installed on any vehicle that will be operated on any public roadway. Not for sale or use in California.
Idle sound of our cams