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If you're building a serious performance engine, then you'll want to consider Speed-Pro Competition Series main bearings. They were developed in NASCAR and Pro Stock competition, so you know they're tough. The bearings are built on premium 1020AK steel backings and overlaid with Speed-Pro's super-duty H-14 alloy. That layer is then covered with a nickel barrier, followed by a thin lead-tin-copper overplate. However, unlike other performance bearings, there is no flash tin layer on top of that. Speed-Pro's engineers have determined that such a layer can actually move around under high loads—sometimes with undesirable consequences. Depending on the application, these main bearings have oil grooves for enhanced lubrication, while maintaining a maximum bearing surface area. They also feature Speed-Pro's exclusive contoured-flange thrust bearing technology for higher thrust-loading capacity. Competition Series main bearings are available in nearly a hundred configurations for countless vehicle and engine applications.
( 63 )
$935.99
Federal Mogul CP-Series rod bearings feature classic tri-metal construction and are a good choice for either street or moderate competition use. They have rugged 1010 steel backings, covered by Federal Mogul's H-24 copper-lead alloy. On top of this is a nickel barrier, followed by the tri-metal (lead-tin-copper) overplate that gives these bearings their strength and fatigue resistance. The bearings are then entirely covered with a flash coating of tin. Order the set designed for use with your make/model and engine application.
( 117 )
$827.99
These Sealed Power MA Series main bearings can actually polish the journals on your crankshaft. That's because there's a small percentage of silicon mixed in with the aluminum and tin that make up the bearing-surface alloy. The silicon is there for wear resistance, but its toughness actually smoothes the journals of a crank whose surface hasn't been optimized! This special surface alloy is laid over a high-strength 1010 steel backing and delivers improved seizure and corrosion resistance, as well as better control of wall variance. It also helps to minimize debris embedding, which can score the crank's surface.
( 76 )
$753.99
If you're building a high-level competition engine, you'll definitely want to consider Speed-Pro Competition Series rod bearings. They were developed in the trenches in NASCAR and Pro Stock competition, so you know they're tough. These bearings are built on premium 1020AK steel backings and overlaid with Speed-Pro's super-duty H-14 alloy. That's covered with a nickel barrier, followed by a thin lead-tin-copper overplate. However, unlike other performance bearings, there is no flash tin layer on top of that. That's because Speed-Pro engineers have determined that such a layer can actually move around under high performance conditions, sometimes resulting in undesirable consequences. Order the set designed for your vehicle and engine application.
( 41 )
$836.99
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$959.99
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