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Speed-Pro Competition Series Main Bearings 141M1X Bearings, Series, 0.001 Crankshaft Undersize, Tri Metal, 3/4 Groove, Chevy, 7.4L, Set of 5

SKU: SLP141M1X

Main Bearings

Speed-Pro Competition Series Main Bearings 141M1X Bearings, Series, 0.001 Crankshaft Undersize, Tri Metal, 3/4 Groove, Chevy, 7.4L, Set of 5

SKU: SLP141M1X

Main Bearings
A$266.63
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

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.

Part Type

Main Bearing Set

Data: v4.2 - Upd: 2026-09-30 14:11:27

Specifications

Product Attributes - Brand
Sealed Power
Product Attributes - Manufacturer's Part Number
141M1X
Product Attributes - Part Type
Main Bearings
Product Attributes - Product Line
Speed-Pro Competition Series Main Bearings
Product Attributes - UPC
724956233441
Product Attributes - Bearing Usage
Performance
Product Attributes - Engine Crankshaft Undersize (in.)
0.001 in.
Product Attributes - Engine Crankshaft Undersize (mm)
0.025mm
Product Attributes - Grooved Bearing
Yes
Product Attributes - Groove Location
Upper and lower
Product Attributes - Groove Style
3/4
Product Attributes - Thrust Bearing Oversize
Stock
Product Attributes - Bearing Material
Tri-metal copper-lead alloy
Product Attributes - Quantity
Sold as a set of 5.
Product Attributes - Notes
Bearing is thinner than standard for .001 in. extra clearance.

Reference Information

Brand Name/s Sealed Power
StreetFX SKU slp141M1X
SFX Item ID 5027881
Supplier Item Code 5027881
Manufacturer SKU 141M1X
Manufacturer UPC 724956233441
Alternative References SEA141M1X, 7.4L

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1970
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    Beginning Year1991
    Ending Year1995
    Engine TypeV8
    Engine FamilyChevy big block Gen V
    Engine Size7.4L/454
  • MakeCHEVROLET
    Beginning Year1996
    Ending Year2000
    Engine TypeV8
    Engine FamilyChevy big block Gen VI
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeV
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeW
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeV
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1973
    Ending Year1973
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeX
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeX
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeY
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1974
    Ending Year1974
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeY
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1975
    Ending Year1975
    Engine TypeV8
    Liter7.4
    CID454
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeY
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeV
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeW
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeW
  • MakeCHEVROLET
    ModelBROOKWOOD
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelBROOKWOOD
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeV
  • MakeCHEVROLET
    ModelBROOKWOOD
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeW
  • MakeCHEVROLET
    ModelCAPRICE
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelCAPRICE
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelCAPRICE
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeV
  • MakeCHEVROLET
    ModelCAPRICE
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeW

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