Shelby Killer Performance was started in 2015 by David an avid performance car enthusiast. Shelby Killer Performance specializes in LSX and 5th gen LT performance parts and accessories. With a five star rating our ultimate passion is making the customer happy.

2016 Shelby KillerPerformance LLC

Brian Tooley Racing - LS3 Naturally Aspirated Camshaft


BTR LS3 Stage I Camshaft

BTR Stg I cam for LS3 221/228 .609"/.571" 112+2

BTR - LS3 Stage II Camshaft

BTR Stg II Cam for LS3 225/238 .612"/.585" 113+3

This cam is great for daily driver applications and has made over 470 rwhp in "cam only" applications.

BTR - LS3 Stage III Camshaft

BTR Stg III cam for LS3 229/244 .615"/.595" 113+4

BTR - LS3 Stage IV Camshaft

BTR LS3 Stg IV Cam 233/248 .619"/.595" 113+5 Cam

Developed in conjunction with Martin Smallwood of Tick Performance this cam has made over 500 rwhp in "cam only" applications.  This is designed as a maximum effort camshaft while maintaining acceptable piston to valve clearance.  With it's conservative lift it is easy on valve springs and valve tips.


Lift approaching .650" or more while using stock 15 degree rocker arms with too much open spring pressure can damage valve tips long term.  We recommend maximum lift of .630" and maximum open pressure of 400 lbs when using stock rocker arms.

BTR - LS3 Camshaft - (Stage 1-4)

BTR Camshaft
BTR-Spring Kit