6 WARNING: For Proposition 65 information, see p. 189 Some parts are not legal for sale or use in California or other states with similar laws/regulations—see p. 189 for details. at at Pedal Commander Throttle Response Enhancers • Fine-tune your vehicle’s throttle response; connect between the pedal and wiring harness on drive-by-wire vehicles • Eco, City, Sport, and Sport+ modes, plus nine adjustable settings for each mode • Get zero-lag performance, faster acceleration, improved fuel economy, and better control in slippery conditions • Smartphone app allows mode changes and tuning via Bluetooth® Rollmaster Timing Sets • Strong, lightweight billet steel sprockets are CNC machined for accuracy and reduced wear • Nine-keyway crankshaft sprockets provide +/- 8° of timing adjustment • Premium, German-made Iwis® full-roller chain Red Series Gold Series • Add a Torrington thrust bearing and nitrided sprockets $167 00 set From $15122 set From Hundreds of applications available! $299 99 each From Summit Racing™ Pro LS Big Gun Camshafts Building on the performance of our Stage 4 Pro LS Cam (SUM-8709R1), Summit Racing Big Gun Cams are engineered to deliver big horsepower in large-displacement, high-compression, supercharged, and nitrous- injected engines. • Hydraulic roller cam lobe profi les promote smooth, stable valvetrain operation • Use with SUM-174005 springs, or TFS-2500286P or TFS-2500287P spring kits • Made in the USA NOTE: Aftermarket or fl y-cut factory pistons, intake, large-tube headers, and deeper gearing are required. $299 99 each From RPM Duration @ Lift Lobe Part Range .050" Int./Ext. Int./Ext. Sep. Number Big Gun 1 Stage 4.5 3,700-7,100 .240°/247° .625"/.605" 116° SUM-8729R1 Big Gun 2 Stage 4.7 3,900-7,200 .242°/251° .625"/.605" 116° SUM-8730R1 Big Gun 3 Stage 5 4,200-7,300 .247°/255° .625"/.605" 117° SUM-8731R1 Big Gun 4 Stage 5.5 4,500-7,500 .251°/255° .625"/.605" 117° SUM-8732R1 Big Gun 1 Stage 4.5 cam delivers higher power and torque, requiring a compression of 11:1 or higher. For optimal results, a 3,500 rpm converter and free-fl owing exhaust are recommended. Big Gun 2 Stage 4.7 cam maximizes midrange and top-end power. A compression ratio of 11.5:1 or higher is recommended and expect a rough idle. Big Gun 3 Stage 5 cam is designed for larger cubic- inch engines with aftermarket or ported heads, an 11.0:1 or higher compression, nearly open exhaust, and a 4,500 rpm converter. Big Gun 4 Stage 5.5 cam has a rowdy idle, delivering all-out acceleration on larger cubic-inch motors with shorter runner intakes. Nearly open exhaust is recommended for optimal mid-range and top-end performance. A 12:1 or higher compression ratio and 4,500 rpm converter are required. Scan here to shop the complete line of Summit Pro LS Cams!
