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Unpublished Item

JEGS Performance Products 25018

High-Performance Main Bearing Set Small Block Chevy (Large Journal)



JEGS Performance Products 25018

Part Number: 555-25018

High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.020"
  • $54.99
    Ships
    JEGS Performance Products 25018 High-Performance Main Bearing Set Small Block Chevy (Large Journal) $54.99

    Specifications:

    Bearing Usage
    Performance
    Groove Location
    Upper
    Grooved Bearing
    Yes
    Crank Undersize (in.)
    0.02
    Engine Family
    Small Block
    Engine Make
    Chevy
    Engine Size
    283-358
    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 JEGS Performance Products 25018 fit your vehicle?

    Narrow Results

    1979 BUICK CENTURY

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SPECIAL

    1985 BUICK REGAL

    • EngineType: V8
    • SubModel: LIMITED

    1972 CHEVROLET CAPRICE

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

    1981 PONTIAC CATALINA

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

    1977 BUICK SKYLARK

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

    1976 CHEVROLET MONTE CARLO

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

    1977-1978 CHEVROLET MALIBU

    • EngineType: V8
    • SubModel: BASE

    1981 PONTIAC GRAND LEMANS

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

    1978-1980 PONTIAC GRAND AM

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

    1988 CHEVROLET CAMARO

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

    1983 PONTIAC GRAND PRIX

    • Liter: 5.0
    • EngineType: V8
    • SubModel: LJ

    1979-1980 PONTIAC GRAND PRIX

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

    1974 CHEVROLET BEL AIR

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

    1979-1981 PONTIAC LEMANS

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

    1979 BUICK CENTURY

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SPECIAL

    1976 CHEVROLET MALIBU

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

    1972 CHEVROLET CAMARO

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

    1977 CHEVROLET CAMARO

    • EngineType: V8
    • SubModel: LT

    1978-1979 OLDSMOBILE OMEGA

    • EngineType: V8
    • SubModel: BROUGHAM

    1983-1984 PONTIAC BONNEVILLE

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

    1972 CHEVROLET CHEVELLE

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

    1978 OLDSMOBILE CUTLASS CALAIS

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

    1978-1979 PONTIAC LEMANS

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

    1981 CHEVROLET BEL AIR

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

    1980-1982 PONTIAC PARISIENNE

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

    1977 PONTIAC PARISIENNE

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

    1977-1979 CHEVROLET IMPALA

    • EngineType: V8
    • SubModel: BASE

    1976 CHEVROLET MONZA

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

    1980 OLDSMOBILE CUTLASS CRUISER

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

    1972 CHEVROLET KINGSWOOD

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

    1979-1980 OLDSMOBILE CUTLASS SUPREME

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

    1972 CHEVROLET BROOKWOOD

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

    1984 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: SS

    1982-1986 CHEVROLET CAMARO

    • EngineType: V8
    • SubModel: BASE

    1978-1979 PONTIAC PHOENIX

    • EngineType: V8
    • SubModel: LJ

    1972 CHEVROLET CHEVELLE

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

    1986 PONTIAC PARISIENNE

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

    1981 PONTIAC GRAND LEMANS

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

    1976 CHEVROLET LAGUNA

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

    1978 BUICK CENTURY

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

    1976 CHEVROLET MALIBU

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

    1977 PONTIAC PHOENIX

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

    1991 OLDSMOBILE CUSTOM CRUISER

    • EngineType: ALL
    • SubModel: ALL

    1977 BUICK SKYLARK

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

    1977 PONTIAC LEMANS

    • EngineType: V8
    • SubModel: SPORT COUPE

    1978 BUICK CENTURY

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

    1989-1990 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: CLASSIC BROUGHAM

    1980-1981 PONTIAC FIREBIRD TRANS AM

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

    1976 CHEVROLET LAGUNA

    • Liter: 5.0
    • EngineType: V8
    • SubModel: S3

    1981 CHEVROLET MONTE CARLO

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

    1977 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: ESTATE

    1978 OLDSMOBILE CUTLASS SUPREME

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

    1985-1988 CHEVROLET MONTE CARLO

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

    1974-1975 CHEVROLET NOVA

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

    1984 PONTIAC GRAND PRIX

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

    1976 CHEVROLET NOVA

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

    1991-1993 CHEVROLET CAPRICE

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

    1975-1976 CHEVROLET CORVETTE

    • EngineType: ALL
    • SubModel: BASE

    1980 CHEVROLET IMPALA

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

    1985 PONTIAC FIREBIRD

    • EngineType: V8
    • SubModel: BASE

    1977 OLDSMOBILE OMEGA

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

    1984 CHEVROLET CAPRICE

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

    1978 CHEVROLET CORVETTE

    • EngineType: ALL
    • SubModel: BASE

    1981 CHEVROLET IMPALA

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

    1973 CHEVROLET MALIBU

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

    1985-1987 OLDSMOBILE CUTLASS SUPREME

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

    1985-1987 PONTIAC GRAND PRIX

    • EngineType: V8
    • SubModel: BROUGHAM

    1976 CHEVROLET MONZA

    • Liter: 5.0
    • EngineType: V8
    • SubModel: 2+2

    1977 CHEVROLET NOVA

    • EngineType: V8
    • SubModel: CONCOURS

    1979 CHEVROLET CAPRICE

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

    1974 CHEVROLET MONTE CARLO

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

    1979-1980 CHEVROLET MONTE CARLO

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

    1976-1977 PONTIAC LEMANS

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

    1987 CHEVROLET CAMARO

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

    1980 OLDSMOBILE CUTLASS

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

    1978-1979 BUICK SKYLARK

    • EngineType: V8
    • SubModel: S

    1980-1981 BUICK CENTURY

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

    1976 CHEVROLET IMPALA

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

    1974-1975 CHEVROLET IMPALA

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

    1974 CHEVROLET CAMARO

    • EngineType: V8
    • SubModel: BASE

    1977 PONTIAC VENTURA

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

    1977-1980 PONTIAC LAURENTIAN

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

    1990-1992 CHEVROLET CAMARO

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

    1976 PONTIAC PARISIENNE

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

    1977 OLDSMOBILE OMEGA

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

    1976 CHEVROLET MALIBU

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

    1973 CHEVROLET MONTE CARLO

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

    1980 OLDSMOBILE CUTLASS CRUISER

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

    1972 CHEVROLET TOWNSMAN

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

    1976 PONTIAC GRAND LEMANS

    • EngineType: ALL
    • SubModel: BR

    1986 PONTIAC FIREBIRD

    • Liter: 5.0
    • SubModel: S/E
    • CUI: 305
    • EngineType: V8

    1978-1979 PONTIAC GRAND PRIX

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

    1977 OLDSMOBILE OMEGA

    • Liter: 5.0
    • SubModel: F85
    • CUI: 305
    • EngineType: V8

    1987-1988 CHEVROLET CAPRICE

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

    1977 CHEVROLET CORVETTE

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

    1977-1979 CHEVROLET MONZA

    • EngineType: V8
    • SubModel: BASE

    1985 CHEVROLET IMPALA

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

    1978 OLDSMOBILE CUTLASS SALON

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

    1977-1979 CHEVROLET MONZA

    • EngineType: V8
    • SubModel: 2+2

    1976 CHEVROLET NOVA

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