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Cam Bearings

Cam bearings are not all created equal. Durabond bearings are the best choice for most builds, but there are situations where something different is called for. Clevite cam bearings are a little harder, and are generally a better choice for engines that will go through a lot of teardowns like a race car) or cam swaps. The Cad Company exclusive grooved cam bearings (pictured) are made to our specs by durabond. They incorperate a groove around the outside to allow oil to flow around the the second hole, which allows oil to enter the bearing on the loaded side, decreasing the chance of bearing failure due to high spring pressure. They also have an oil clearance closer to the middle of the factory spec, instead of tighter like the other off-the-shelf bearings, eliminating the need to clearance the bearings during assembly. If you have a problem with the cam bearings 'smearing', these bearings are the solution.

Rod and Main Bearings

Here at Cad Company, we have torture tested a variety of different bearings under a wide range of conditions. In our experience, there is not any real benefit of one brand over another (and many of them are the same bearings in a different box, anyway). Some sizes are only available in 1 or 2 brands. If you want a specific brand, we would be happy to accomodate you (if they are available in the size you need), but be aware that specifying a brand may result in a higher price, as we don't have the benefit of negotiating the best price for a volume order.

There are 2 'series' of bearings available for rod bearings - 'P' and 'H'. 'H' bearings are generally intended for race cars. They are a harder alloy, and will survive more abuse in the way of things like being hammered on by detonation, but they tend to result in increased crankshaft wear due to reduced embedability. 'Embedability' is the property of bearings where contaminants embed into the bearing material, and reduced embedability means that those contaminants stay on the surface, where they can scratch the crankshaft. We do no not recommend 'H' series bearings for anything but the most extreme drag racing applications.

Coatings - there is a lot of contradictory information out there about the various bearing coatings available. We have not been able to verify any of these claims on dyno test engines. At this time, we do not offer coated bearings.