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Speed-Pro Competition Series Main Bearings 108M Bearings, Series, Standard Size, Super Duty Alloy, H-14 Tri-Metal Copper-Lead Alloy, 3/4 Groove, Oldsmobile, 400, 425, 455, Set of 5

SKU: SLP108M

Main Bearings

Speed-Pro Competition Series Main Bearings 108M Bearings, Series, Standard Size, Super Duty Alloy, H-14 Tri-Metal Copper-Lead Alloy, 3/4 Groove, Oldsmobile, 400, 425, 455, Set of 5

SKU: SLP108M

Main Bearings
A$374.64
LAST ONE! Est Ship 4-7 days. LAST ONE! This is the last unit at our distribution centre. Contact us if you need more. 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 14:11:26

Specifications

Product Attributes - Brand
Sealed Power
Product Attributes - Manufacturer's Part Number
108M
Product Attributes - Part Type
Main Bearings
Product Attributes - Product Line
Speed-Pro Competition Series Main Bearings
Product Attributes - UPC
724956040971
Product Attributes - Bearing Usage
Performance
Product Attributes - Engine Crankshaft Undersize (in.)
Stock
Product Attributes - Engine Crankshaft Undersize (mm)
Stock
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.

Reference Information

Brand Name/s Sealed Power
StreetFX SKU slp108M
SFX Item ID 5029076
Supplier Item Code 5029076
Manufacturer SKU 108M
Manufacturer UPC 724956040971
Alternative References SEA108M, H-14

Compatibility

Application Data
  • MakeOLDSMOBILE
    Beginning Year1965
    Ending Year1967
    Engine TypeV8
    Engine FamilyOldsmobile V8
    Engine Size6.6L/400
  • MakeOLDSMOBILE
    Beginning Year1965
    Ending Year1967
    Engine TypeV8
    Engine FamilyOldsmobile V8
    Engine Size7.0L/425
  • MakeOLDSMOBILE
    Beginning Year1968
    Ending Year1976
    Engine TypeV8
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1965
    Ending Year1967
    Engine TypeV8
    Liter6.6
    CID400
    CC6555
    Engine FamilyOldsmobile V8
    Engine Size6.6L/400
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1968
    Ending Year1969
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1968
    Ending Year1970
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1968
    Ending Year1970
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1968
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1968
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1968
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1968
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1968
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model442
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Liter7.5
    CID455
    CC7456
    Engine FamilyOldsmobile V8
    Engine Size7.5L/455
  • MakeOLDSMOBILE
    Model98
    SubmodelBASE
    Beginning Year1965
    Ending Year1966
    Engine TypeV8
    Liter7.0
    CID425
    CC6966
    Engine FamilyOldsmobile V8
    Engine Size7.0L/425
  • MakeOLDSMOBILE
    Model98
    SubmodelBASE
    Beginning Year1965
    Ending Year1966
    Engine TypeV8
    Liter7.0
    CID425
    CC6966
    Engine FamilyOldsmobile V8
    Engine Size7.0L/425

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