Brisk Silver Racing Spark Plugs - Set of 6 (LF3/LF4) Gaskets & Adhesives you will notice some increased

you will notice some increased volume and pitch of the engine

higher on aftermarket cams)

D3S - Cadillac ATS/CTS/ATS-V equipped with factory HID

We have changed our casting to replicate the ported version

The PCM commands a flat AF ratio and drops timing slightly with decreases in pulley size

Brisk Silver Racing Spark Plugs - Set of 6 (LF3/LF4) Gaskets & Adhesives you will notice some increasedThis is a set of 6 Brisk Silver Racing spark plugs for the LF3 LF4 engine. These are 1 step colder than stock. We offer our plugs to come pre gapped for your builds needs if you so choose. Stock will be how the plugs come shipped from Brisk at a gap of approximately . 032". The Stage 1 offering, gapped at . 025", is for stock or mildly modified cars running pump gas 91 or 93 octane. The Stage 2 offering, gapped at . 020", is the go to gap that we run