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Unpublished Item

JEGS Performance Products 25019

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



JEGS Performance Products 25019

Part Number: 555-25019

High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.030"
  • $52.99
    Ships

    Specifications:

    Bearing Usage
    Performance
    Groove Location
    Upper
    Grooved Bearing
    Yes
    Crank Undersize (in.)
    0.03
    Engine Family
    Small Block
    Engine Make
    Chevy
    Engine Size
    283-359
    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?

    Narrow Results

    1984 CHEVROLET IMPALA

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

    1972 CHEVROLET CHEVELLE

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

    1977 OLDSMOBILE OMEGA

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

    1980 CHEVROLET IMPALA

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

    1985-1986 OLDSMOBILE CUTLASS

    • EngineType: ALL
    • SubModel: ALL

    1978 BUICK REGAL

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

    1976 PONTIAC LAURENTIAN

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

    1977 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: ESTATE

    1973 CHEVROLET IMPALA

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

    1979 PONTIAC FIREBIRD

    • Liter: 5.7
    • EngineType: V8
    • SubModel: ESPRIT

    1975 CHEVROLET BEL AIR

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

    1976-1977 PONTIAC LEMANS

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

    1981 PONTIAC PARISIENNE

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

    1985-1988 CHEVROLET MONTE CARLO

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

    1975 CHEVROLET MONZA

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

    1978 PONTIAC FIREBIRD

    • EngineType: V8
    • SubModel: BASE

    1979 CHEVROLET MALIBU

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

    1977 PONTIAC PHOENIX

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

    1978 BUICK REGAL

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

    1977-1978 CHEVROLET MALIBU

    • EngineType: V8
    • SubModel: BASE

    1978 OLDSMOBILE CUTLASS SUPREME

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

    1977-1979 OLDSMOBILE STARFIRE

    • EngineType: V8
    • SubModel: BASE

    1978 OLDSMOBILE CUTLASS SALON

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

    1985-1986 PONTIAC BONNEVILLE

    • EngineType: V8
    • SubModel: LE

    1974 CHEVROLET CAMARO

    • EngineType: V8
    • SubModel: BASE

    1978 OLDSMOBILE CUTLASS SALON

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

    1977 PONTIAC VENTURA

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

    1977 BUICK CENTURY

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

    1978 OLDSMOBILE CUTLASS SUPREME

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

    1980 PONTIAC CATALINA

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

    1977-1979 OLDSMOBILE STARFIRE

    • EngineType: V8
    • SubModel: SX

    1985-1987 PONTIAC GRAND PRIX

    • EngineType: V8
    • SubModel: LE

    1981 CHEVROLET BEL AIR

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

    1977-1980 PONTIAC LAURENTIAN

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

    1977 BUICK SKYLARK

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

    1979-1980 PONTIAC GRAND LEMANS

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

    1986-1987 BUICK REGAL

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

    1977-1978 CHEVROLET MALIBU

    • EngineType: V8
    • SubModel: CLASSIC

    1978-1979 PONTIAC GRAND PRIX

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

    1975-1976 CHEVROLET CORVETTE

    • EngineType: ALL
    • SubModel: BASE

    1993 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: CLASSIC LS

    1972 CHEVROLET BROOKWOOD

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

    1978 PONTIAC GRAND LEMANS

    • EngineType: V8
    • SubModel: BASE

    1977 CHEVROLET CAMARO

    • EngineType: V8
    • SubModel: LT

    1984 PONTIAC BONNEVILLE

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

    1978 BUICK CENTURY

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

    1976 CHEVROLET MALIBU

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

    1977 PONTIAC PARISIENNE

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

    1972 CHEVROLET KINGSWOOD

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

    1976 PONTIAC GRAND LEMANS

    • EngineType: ALL
    • SubModel: BR

    1979-1980 OLDSMOBILE CUTLASS SALON

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

    1979-1980 CHEVROLET MALIBU

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

    1987-1988 CHEVROLET CAPRICE

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

    1972 CHEVROLET BEL AIR

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

    1979-1980 PONTIAC FIREBIRD

    • Liter: 5.0
    • EngineType: V8
    • SubModel: ESPRIT

    1973 CHEVROLET BEL AIR

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

    1985-1986 PONTIAC BONNEVILLE

    • EngineType: V8
    • SubModel: BROUGHAM

    1979-1980 BUICK REGAL

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

    1982-1985 PONTIAC PARISIENNE

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

    1977-1979 CHEVROLET NOVA

    • EngineType: V8
    • SubModel: BASE

    1972 CHEVROLET KINGSWOOD

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

    1977 PONTIAC VENTURA

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

    1976 CHEVROLET IMPALA

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

    1976 CHEVROLET CAMARO

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

    1977 PONTIAC FIREBIRD

    • Liter: 5.0
    • EngineType: V8
    • SubModel: ESPRIT

    1985-1987 PONTIAC GRAND PRIX

    • EngineType: V8
    • SubModel: BASE

    1978 CHEVROLET CAPRICE

    • EngineType: V8
    • SubModel: BASE

    1977-1979 CHEVROLET IMPALA

    • EngineType: V8
    • SubModel: BASE

    1983 CHEVROLET MALIBU

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

    1979-1980 OLDSMOBILE CUTLASS CALAIS

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

    1989-1990 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: CLASSIC BROUGHAM

    1985 PONTIAC FIREBIRD

    • EngineType: V8
    • SubModel: BASE

    1977 BUICK SKYLARK

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SR

    1977-1978 PONTIAC LEMANS

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

    1979 CHEVROLET CAPRICE

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

    1985 PONTIAC FIREBIRD

    • EngineType: V8
    • SubModel: S/E

    1973 CHEVROLET CHEVELLE

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

    1979-1980 PONTIAC FIREBIRD

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

    1984 BUICK REGAL

    • EngineType: V8
    • SubModel: BASE

    1981 CHEVROLET CORVETTE

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

    1978-1979 PONTIAC SUNBIRD

    • EngineType: V8
    • SubModel: BASE

    1981 PONTIAC LAURENTIAN

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

    1981 PONTIAC GRAND LEMANS

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

    1976 CHEVROLET MONTE CARLO

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

    1989-1992 CHEVROLET CAPRICE

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

    1976 CHEVROLET MONZA

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

    1978 PONTIAC GRAND PRIX

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

    1987 OLDSMOBILE CUTLASS

    • EngineType: ALL
    • SubModel: SALON

    1982 PONTIAC FIREBIRD

    • EngineType: V8
    • SubModel: S/E

    1977 OLDSMOBILE DELTA 88

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

    1977-1979 CHEVROLET MONZA

    • EngineType: V8
    • SubModel: BASE

    1978 OLDSMOBILE CUTLASS CALAIS

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

    1980 OLDSMOBILE CUTLASS CRUISER

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

    1980 PONTIAC GRAND PRIX

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

    1980 OLDSMOBILE CUTLASS

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

    1972 CHEVROLET BISCAYNE

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

    1982-1986 CHEVROLET CAMARO

    • EngineType: V8
    • SubModel: BASE

    1983 OLDSMOBILE CUTLASS SUPREME

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

    1980-1981 PONTIAC FIREBIRD TRANS AM

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

    1977 BUICK SKYLARK

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