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It makes much better torque and power across the entire RPM range. Efficiency cam produces outstanding torque right off idle and maintains efficiency.

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Summit Racing Pro LS/Vortec Truck Swap Cams Part Number lift, a 6,500 rpm redline and could run for over 100k miles on a set of springs. Why LS6 springs? The 405 horsepower LS6 had. The Stage 3 and 4 truck cams are also designed around the LS6 springs.The Stage 2 truck cam will too, but Summit Racing recommends LS6 springs to extend the rev range.The Stage 1 truck cam is designed to work with the original springs.Next, letвЂ™s talk about valve lift and the springs that match. You can get the idle you want simply by raising or lowering the idle speed a bit. They wonвЂ™t lug or surge, and are designed to maintain part-throttle efficiency. Idle quality is important and your tuner will find these cams are easy to work with. It hits hard at 2,800-3,000 rpm вЂ“and keeps pulling through 6,800 rpm. The Stage 4truck cam makes great power with a killer idle.The Stage 3 truck cam works well with a stock stall, but a 2,500 is recommended.The Stage 1 and Stage 2truck cams are designed to work well with the stock converter.The truck cams have intake closing points between 36 and 41 degrees after bottom dead center (BDC) for maximum punch where the converter hits. Pro LS Truck cams are designed to make power where itвЂ™s needed. Here are those same specs in a single downloadable PDF: *** Summit Racing Pro LS Cams Printable Spec ChartДetailed spec charts for every Pro LS Camshaft are listed in the continuing story below.

Want to know the rpm range? Look at the intake valve closing column. Summit Racing Pro LS cams take the guesswork out of choosing the perfect cam.Дo you want to know what your engine will idle like? Look in the intake valve opening column. Pressure on the piston before bottom dead center (BDC) helps, but works against you after BDC on the exhaust stroke. It generally hurts low rpm performance, but is increasingly helpful at peak torque and above. This event, in conjunction with IVO, creates overlap. This event has the most control over idle quality. This event has the most control over the operating range. Need a refresher on the valve events? Here they are in order of importance. *** Summit Racing Pro LS cams listed in this format: Important note: Summit Racing Pro LS Camshafts are not legal for use in California or other states with similar laws/regulations.В Please check your state and/or local laws/regulations.

Comparing Camshafts (Part 2): Consider Individual Timing Events When Choosing a Cam.

Comparing Camshafts: A History of Camshaft Specs and Choosing the Right Cam.

This ensures repeatable performance and distinct behaviors.

From Stage 1 to Stage 4, youвЂ™ll find these timing events in exacting increments. Summit Racing Pro LS cams are designed with the specific timing events required by each application. This muddies the waters and can compromise performance.

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*** How to Pick the Right Pro LS Cam for Your ApplicationД¬ams are generally listed by duration, lobe separation, and advance. 4 LS or Vortec engine, youвЂ™re probably going to like these Summit Racing Pro LS camshafts. steel, and are designed to be easy on your valvetrain and run with lower-cost components, yet remain stable to over 7,000 rpm with a good valve spring kit. The new Summit Racing Pro LS Camshafts are precision-machined from high-quality U.S. Want to see how these cams are made? Check out this tour of the factory making the Pro LS Camshafts. Summit Racing-brand parts are designed to be budget-friendly alternatives to other options without sacrificing quality and performance. The Summit Racing Pro LS Camshafts lineup includes: Summit Racing Equipment has a new line of camshafts for LS and LS-based Vortec truck engines which consists of 10 different cam profiles for various performance applications.