A cam card from a Summit Racing Pro LS series camshaft. We’ll use a timing card from one of Summit Racing’s Pro LS series camshafts as our example, but these same numbers and relationships will apply to any camshaft from any manufacturer for any four-stroke engine. The camshaft has been described as the “brain of an engine,” so let’s break down each of these specs to decipher how a cam exerts its control over an engine. That’s vitally important when it comes to choosing the right camshaft. These may seem obscure and even perhaps baffling, but in fact these cam specifications lay out a simple way of determining exactly how a particular camshaft will operate in the engine. All aftermarket and production camshafts use a series of terms and specifications to identify their operating characteristics. One area of confusion is certainly a camshaft timing card. What is a Camshaft Timing Card or Cam Card? But just like learning a new language, if you break each one down into smaller pieces, everything becomes easier to understand. No guarantee once engine has been run.The world of high performance engines can be a very confusing place, where terms and specifications seem to be full of obscure references that appear to make no sense. If camshafts and lifters do not meet your level of satisfaction, DO NOT INSTALL! Returns only accepted if camshafts and lifters has not been installed. Customer has the privilege of checking and inspecting camshafts and lifters at the time of installation. There is no guarantee on camshafts and lifters after engine is started.

NOTE: Anytime you install a new camshaft, it should always have new lifters installed as cams and lifters create a wear pattern as they mate together.Ĭamshafts and lifters are guaranteed to be straight, on size, and to correct lift, index and duration.

Compression Ratio: 10.3:1 or less check valve to piston clearance.Transmission: STOCK AUTOMATIC OR MANUAL.Computer Controlled Vehicles: Modified computer chip may be required to compensate for low vacuum.Lobe Separation: Intake: 110 Exhaust: 118.Advertised Duration: Intake: 290 Exhaust: 290.For sale is a BRAND NEW Engine Pro MC1713 Hydraulic Flat Tappet Camshaft!

Stock cam specs for chevy 350