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Part Numbering System
All Crane Cams part numbers carry either five digits followed by a dash and a quantity suffix, or six digits, for easier computer inventory control. The first two digits of each of the part numbers tells exactly which engine family that particular part will correctly fit, or that it is an item that applies to several different engines. For instance, all small-block Chevrolets (262-400) are identified as an "11" prefix. A small-block Chevy camshaft, grind number PowerMax H-260-2 is Part Number 113901. The "11" indicates that this cam is for a small-block Chevy, the "390" identifies the part number that is computer assigned to the PowerMax H-260-2 grind.

To go further, a "13" prefix indicates big-block Chevys 396-454; Ford "Windsor" 221-302 head engines are "36" prefix; and Mopar "LA" engines 273-360 are "69" prefix.

Crane rocker arms carry similar engine family prefixes. Other valve train component items, such as valve springs, retainers, valve stem seals, valve stem locks, etc., which are applicable to several engine families, carry the "99" prefix. There are some minor exceptions to this basic guideline, but the system is easily understood once it becomes familiar to you.

To further show you how this prefix numbering system works, we are showing below some of the more common engine families and the prefix that identifies their application. By learning this system you can readily identify and verify a specific part number's engine family, double checking for accuracy in your selection.

NOTE: Due to basic differences in their design, some engine families will have two or three different prefixes. These identify the differences as they apply to camshaft selection.
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These Checking Pushrods are adjustable with over 1.000" of travel, enabling you to arrive at the correct pushrod length to create the correct valve train geometry for your particular engine, or when using hydraulic lifters, to determine hydraulic lifter preload. These pushrods are not to be run in your engine. Once correct pushrod length is determined, refer to our pushrod listings, or order special length pushrods. Checking Pushrods come two per package.

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