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Speed-Pro Competition Series Main Bearings
Main Bearings, Competition, 0.001 in. Oversize, Tri Metal, 3/4 Groove, Ford, 351M, 351W, 400, Set
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Overview
Brand:
Manufacturer's Part Number:
130M1X
Part Type:
Product Line:
Summit Racing Part Number:
SLP-130M1X
UPC:
724956940950
Bearing Usage:
Performance
Engine Crankshaft Undersize (in.):
0.001 in.
Engine Crankshaft Undersize (mm):
0.025mm
Grooved Bearing:
Yes
Groove Location:
Upper and lower
Groove Style:
3/4
Thrust Bearing Oversize:
Stock
Bearing Material:
Tri-metal, copper-lead alloy
Quantity:
Sold as a set.
Notes:
Bearing features 0.001 extra clearance.
Speed-Pro Competition Series Main Bearings
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.
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