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JEGS Performance Products 25017 - JEGS Main Bearings



JEGS Performance Products 25017 - JEGS Main Bearings

JEGS Part Number: 555-25017

High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.010"
  • $38.97
    Ships

    Specifications:

    Bearing Usage
    Performance
    Groove Location
    Upper
    Grooved Bearing
    Yes
    Crank Undersize (in.)
    0.01
    Engine Family
    Small Block
    Engine Make
    Chevy
    Engine Size
    283-357
    Material
    Bi-metal, silicon aluminum

    Traditional bearings have three layers: steel, copper-lead, and thin babbitt overlay (only 0.0005" to 0.0008"). JEGS Main Bearings in a Performance or High-Performance series have two layers: high-strength steel and bonded silicon, tin, and copper in an aluminum matrix (0.015" thick). Because an alloy, properties are maintained through its entire depth to deliver consistent, reliable output. Additionally, micro-fine machined High-Performance Bearings have chamfered oil holes and offer a copper-lead version for Chevy Gen III/IV LS Engines only. Bearings are sold in sets for Chevy and Ford applications.

    High Load Capacity
    Aluminum silicon bearings withstand the stress of high-performance engines. JEGS Bearings are made from the same metallurgical alloy so cars that have standard bearings benefit from this alloy used in race engines.

    Temperature Resistance
    This alloy's melting/fatigue point is 450°+ F (100° more than the thin babbitt overlay of tri-metal bearings). This means extra protection against localized overheating due to misalignment, detonation, overloading, loss of coolant, etc.

    Particle Embedability
    More than half of engine bearing failure is caused by metallic particles that scratch crank journals and weaken or tear thin bearing overlays. Because aluminum silicon overlay is much thicker than babbitt in tri-metal bearings (0.015" vs. 0.0008"), it provides 18 times more embedability to trap particles to prevent crank journal scratches. This is especially true for particles over 0.0004", which cause most of the damage.

    Conformability
    The thicker aluminum silicon layer allows bearings to better conform to problems, such as metal-to-metal contact due to misalignment. Greater conformability also means fewer bearing failures.

    Control of Wall Tolerance
    Bearing-to-journal clearance is affected by several factors. We've alleviated concerns about inconsistent shell-to-shell bearing wall thickness by using statistical control methods to minimize wall thickness variation. JEGS Engine Bearing thickness varies no more than 0.00010". Other manufacturers produce bearings with wall thickness at the crown that varies as much as 0.00025".

    Does this fit your vehicle?

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    1978-1979 PONTIAC PARISIENNE

    • EngineType: V8
    • SubModel: BASE

    1977 OLDSMOBILE OMEGA

    • Liter: 5.0
    • SubModel: BROUGHAM
    • CUI: 305
    • EngineType: V8

    1978-1979 PONTIAC SUNBIRD

    • EngineType: V8
    • SubModel: BASE

    1976 CHEVROLET NOVA

    • CC: 5031
    • Liter: 5.0
    • SubModel: CONCOURS
    • EngineType: V8

    1972 CHEVROLET KINGSWOOD

    • Liter: 5.7
    • SubModel: ESTATE
    • CUI: 350
    • EngineType: V8

    1980-1981 CHEVROLET CAMARO

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1974-1975 CHEVROLET MALIBU

    • Liter: 5.7
    • SubModel: CLASSIC
    • CUI: 350
    • EngineType: V8

    1979-1980 CHEVROLET MALIBU

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1979-1980 BUICK CENTURY

    • Liter: 5.0
    • EngineType: V8
    • SubModel: LIMITED

    1982-1983 BUICK REGAL

    • Liter: 5.0
    • EngineType: V8
    • SubModel: ESTATE WAGON

    1983 BUICK REGAL

    • Liter: 5.0
    • EngineType: V8
    • SubModel: LIMITED

    1977 BUICK REGAL

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1983-1984 PONTIAC GRAND PRIX

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1987-1988 CHEVROLET CAPRICE

    • CC: 5031
    • Liter: 5.0
    • SubModel: CLASSIC BROUGHAM
    • EngineType: V8

    1979-1980 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BROUGHAM

    1976 CHEVROLET MONTE CARLO

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1987 OLDSMOBILE CUTLASS

    • EngineType: ALL
    • SubModel: SALON

    1975-1976 CHEVROLET MONTE CARLO

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1978-1979 CHEVROLET NOVA

    • EngineType: V8
    • SubModel: CUSTOM

    1979-1980 PONTIAC GRAND PRIX

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1974-1975 CHEVROLET NOVA

    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8

    1979 OLDSMOBILE CUTLASS

    • Liter: 5.0
    • EngineType: V8
    • SubModel: VISTA CRUISER

    1981 PONTIAC PARISIENNE

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8

    1976 CHEVROLET LAGUNA

    • Liter: 5.7
    • EngineType: V8
    • SubModel: S3

    1985-1987 PONTIAC GRAND PRIX

    • EngineType: V8
    • SubModel: BASE

    1977 PONTIAC LEMANS

    • Liter: 5.0
    • SubModel: SPORT
    • CUI: 305
    • EngineType: V8

    1978-1979 OLDSMOBILE OMEGA

    • EngineType: V8
    • SubModel: BROUGHAM

    1976 CHEVROLET NOVA

    • Liter: 5.7
    • SubModel: CONCOURS
    • CUI: 350
    • EngineType: V8

    1978-1979 PONTIAC PHOENIX

    • EngineType: V8
    • SubModel: LJ

    1974 CHEVROLET MONTE CARLO

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1985-1988 CHEVROLET MONTE CARLO

    • Liter: 5.0
    • SubModel: SS
    • CUI: 305
    • EngineType: V8

    1985-1986 OLDSMOBILE CUTLASS

    • EngineType: ALL
    • SubModel: ALL

    1973 CHEVROLET LAGUNA

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1979 PONTIAC GRAND LEMANS

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SAFARI

    1976 CHEVROLET MALIBU

    • CC: 5031
    • Liter: 5.0
    • SubModel: CLASSIC
    • EngineType: V8

    1979 CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: 4
    • CUI: 350
    • EngineType: V8

    1977 CHEVROLET CAPRICE

    • EngineType: V8
    • SubModel: CLASSIC

    1977-1979 OLDSMOBILE STARFIRE

    • EngineType: V8
    • SubModel: SX

    1973 CHEVROLET NOVA

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1991 OLDSMOBILE CUSTOM CRUISER

    • EngineType: ALL
    • SubModel: ALL

    1974 CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 350
    • EngineType: V8

    1980 BUICK CENTURY

    • Liter: 5.0
    • EngineType: V8
    • SubModel: ESTATE WAGON

    1978-1979 PONTIAC LAURENTIAN

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8

    1972 CHEVROLET CHEVELLE

    • Liter: 5.7
    • SubModel: GREENBRIER
    • CUI: 350
    • EngineType: V8

    1976 CHEVROLET IMPALA

    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8

    1980-1982 CHEVROLET MALIBU

    • CC: 5031
    • Liter: 5.0
    • SubModel: CLASSIC
    • EngineType: V8

    1973 CHEVROLET MALIBU

    • Liter: 5.7
    • SubModel: ESTATE
    • CUI: 350
    • EngineType: V8

    1972 CHEVROLET CAPRICE

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1977-1981 PONTIAC FIREBIRD

    • Liter: 5.0
    • EngineType: V8
    • SubModel: FORMULA

    1986 PONTIAC PARISIENNE

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8

    1976 CHEVROLET MALIBU

    • Liter: 5.7
    • SubModel: CLASSIC
    • CUI: 350
    • EngineType: V8

    1979-1980 BUICK REGAL

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1972 CHEVROLET BROOKWOOD

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1986-1988 CHEVROLET CAPRICE

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1979-1980 OLDSMOBILE CUTLASS CALAIS

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1981 CHEVROLET BEL AIR

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1977 BUICK SKYLARK

    • Liter: 5.0
    • EngineType: V8
    • SubModel: S

    1978 PONTIAC FIREBIRD

    • EngineType: V8
    • SubModel: BASE

    1978 PONTIAC FIREBIRD

    • EngineType: V8
    • SubModel: ESPRIT

    1981 PONTIAC GRAND LEMANS

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SA

    1978 BUICK LESABRE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1988 CHEVROLET CAMARO

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1985-1987 PONTIAC GRAND PRIX

    • EngineType: V8
    • SubModel: BROUGHAM

    1974 CHEVROLET MALIBU

    • Liter: 5.7
    • SubModel: ESTATE
    • CUI: 350
    • EngineType: V8

    1973 CHEVROLET NOVA

    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8

    1989 CHEVROLET CAMARO

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1976 CHEVROLET MALIBU

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1974 CHEVROLET BEL AIR

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1977 OLDSMOBILE OMEGA

    • Liter: 5.7
    • SubModel: F85
    • CUI: 350
    • EngineType: V8

    1976 CHEVROLET NOVA

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1984 BUICK REGAL

    • EngineType: V8
    • SubModel: BASE

    1977 CHEVROLET NOVA

    • EngineType: V8
    • SubModel: CONCOURS

    1973 CHEVROLET CHEVELLE

    • Liter: 5.7
    • SubModel: DELUXE
    • CUI: 350
    • EngineType: V8

    1985-1987 PONTIAC GRAND PRIX

    • EngineType: V8
    • SubModel: LE

    1982-1983 OLDSMOBILE CUTLASS CRUISER

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8

    1981 PONTIAC CATALINA

    • Liter: 5.0
    • SubModel: SAFARI
    • CUI: 305
    • EngineType: V8

    1981 CHEVROLET MONTE CARLO

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1978-1980 PONTIAC GRAND AM

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1975-1976 CHEVROLET MALIBU

    • Liter: 5.7
    • EngineType: V8
    • SubModel: ESTATE

    1975 CHEVROLET CAMARO

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1982-1986 CHEVROLET CAMARO

    • EngineType: V8
    • SubModel: BASE

    1976 CHEVROLET MONZA

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1985 CHEVROLET IMPALA

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1983-1984 PONTIAC BONNEVILLE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BROUGHAM

    1975-1976 CHEVROLET CORVETTE

    • EngineType: ALL
    • SubModel: BASE

    1977 PONTIAC VENTURA

    • Liter: 5.7
    • Aspiration: N
    • SubModel: SJ
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8

    1977 CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8

    1972 CHEVROLET CHEVELLE

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1972 CHEVROLET CHEVELLE

    • Liter: 5.7
    • SubModel: MALIBU
    • CUI: 350
    • EngineType: V8

    1976 CHEVROLET CAMARO

    • Liter: 5.7
    • SubModel: LT
    • CUI: 350
    • EngineType: V8

    1984 PONTIAC BONNEVILLE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: LE

    1977 PONTIAC PHOENIX

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1981 CHEVROLET CORVETTE

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1973 CHEVROLET MONTE CARLO

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1985-1990 CHEVROLET CAPRICE

    • CC: 5031
    • Liter: 5.0
    • SubModel: CLASSIC
    • EngineType: V8

    1974-1975 CHEVROLET LAGUNA

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1973 CHEVROLET IMPALA

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1977 BUICK CENTURY

    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8

    1982-1985 PONTIAC PARISIENNE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BROUGHAM

    1978-1979 BUICK SKYLARK

    • EngineType: V8
    • SubModel: BASE
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