Engine Assembly Basics -- Cam, Valvetrain, Top-End
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The amount of load a spring delivers is as much a function of its designed spring rate as its installed height. When ordering springs, a measurement of the available installed height is a key piece of information in selecting the proper springs. These Mopar big-block heads had 2.060-inch installed height. With the required spring cup, the installed height will be 2.00 inches. Simply ordering and installing a spring designed for a Chrysler big-block, which typically has an installed height of 1.880 inches will result in way too little seat load. A COMP PN 924 spring for a big-block Mopar delivers 125 lbs load at 1.880 inches, while at 2.000 inches, the load drops to 87 lbs, too weak for even a stock cam. Measuring and noting the installed height is the only way to determine if a spring will deliver the load required. Powerhouse has these handy height micrometers (PN POW101200), which make measuring installed height a breeze. View Related Article
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Ford Mustang Research
Consider the Ford Mustang for your next new car, and browse reviews featuring information on test drives, comparisons, options and features. The 2010 Mustang has fuel economy of 20 mpg, and comes with comparable warranty coverage to other vehicles in its class. Other similar vehicles are the Chevy Camaro and the Pontica GTO.
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