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Unpublished Item

JEGS Performance Products 25019 - JEGS Main Bearings



JEGS Performance Products 25019 - JEGS Main Bearings

JEGS Part Number: 555-25019

High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.030"
  • $56.99
    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?

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    1977 OLDSMOBILE OMEGA

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

    1974-1975 CHEVROLET NOVA

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

    1979-1980 PONTIAC GRAND LEMANS

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

    1980-1982 CHEVROLET MALIBU

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

    1985 CHEVROLET IMPALA

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

    1977 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: BASE

    1976 CHEVROLET IMPALA

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

    1981 CHEVROLET MONTE CARLO

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

    1978 CHEVROLET CAPRICE

    • EngineType: V8
    • SubModel: BASE

    1993 CHEVROLET CAPRICE

    • EngineType: V8
    • SubModel: CLASSIC

    1974-1975 CHEVROLET LAGUNA

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

    1984 PONTIAC GRAND PRIX

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

    1979-1980 OLDSMOBILE CUTLASS CALAIS

    • 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

    1977 PONTIAC LEMANS

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

    1977-1979 CHEVROLET NOVA

    • EngineType: V8
    • SubModel: BASE

    1975 CHEVROLET MONZA

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

    1977-1981 PONTIAC FIREBIRD

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

    1982 PONTIAC FIREBIRD

    • EngineType: V8
    • SubModel: S/E

    1980 OLDSMOBILE CUTLASS

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

    1976 CHEVROLET IMPALA

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

    1972 CHEVROLET CORVETTE

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

    1986 PONTIAC FIREBIRD

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

    1983 OLDSMOBILE CUTLASS SUPREME

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

    1991 BUICK ROADMASTER

    • EngineType: ALL
    • SubModel: BASE

    1979 PONTIAC GRAND LEMANS

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

    1978 PONTIAC FIREBIRD

    • EngineType: V8
    • SubModel: BASE

    1973 CHEVROLET MONTE CARLO

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

    1977 OLDSMOBILE DELTA 88

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

    1977 PONTIAC GRAND LEMANS

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

    1972 CHEVROLET MONTE CARLO

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

    1977 OLDSMOBILE OMEGA

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

    1978-1979 PONTIAC LEMANS

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

    1985-1987 PONTIAC GRAND PRIX

    • EngineType: V8
    • SubModel: LE

    1974 CHEVROLET CORVETTE

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

    1973 CHEVROLET BEL AIR

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

    1979 CHEVROLET MALIBU

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

    1980 PONTIAC CATALINA

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

    1991-1992 CHEVROLET CAMARO

    • CC: 5031
    • Liter: 5.0
    • SubModel: Z28
    • EngineType: V8

    1978-1979 CHEVROLET NOVA

    • EngineType: V8
    • SubModel: CUSTOM

    1977 PONTIAC VENTURA

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

    1989-1992 CHEVROLET CAPRICE

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

    1976 PONTIAC LAURENTIAN

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

    1979-1980 PONTIAC GRAND LEMANS

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

    1974 CHEVROLET MONTE CARLO

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

    1977 PONTIAC FIREBIRD

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

    1993 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: CLASSIC LS

    1976 CHEVROLET CAMARO

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

    1977-1979 CHEVROLET CAMARO

    • EngineType: V8
    • SubModel: BASE

    1984 BUICK REGAL

    • EngineType: V8
    • SubModel: BASE

    1978-1979 PONTIAC LAURENTIAN

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

    1991-1992 CHEVROLET CAPRICE

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

    1979 BUICK CENTURY

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

    1980-1982 PONTIAC PARISIENNE

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

    1975 CHEVROLET BEL AIR

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

    1972 CHEVROLET BROOKWOOD

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

    1983-1984 PONTIAC BONNEVILLE

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

    1980-1981 PONTIAC LAURENTIAN

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

    1979-1980 PONTIAC FIREBIRD

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

    1973 CHEVROLET CHEVELLE

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

    1975-1976 CHEVROLET MONTE CARLO

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

    1972 CHEVROLET IMPALA

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

    1986-1987 BUICK REGAL

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

    1985 BUICK REGAL

    • EngineType: V8
    • SubModel: LIMITED

    1977 PONTIAC VENTURA

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

    1980-1981 PONTIAC LEMANS

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

    1978-1979 PONTIAC GRAND PRIX

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

    1990 CHEVROLET CAMARO

    • CC: 5031
    • Liter: 5.0
    • SubModel: IROC-Z
    • EngineType: V8

    1981-1983 CHEVROLET IMPALA

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

    1983 PONTIAC GRAND PRIX

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

    1972 CHEVROLET CHEVELLE

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

    1982-1986 PONTIAC FIREBIRD TRANS AM

    • EngineType: ALL
    • SubModel: ALL

    1976 CHEVROLET CAMARO

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

    1985 BUICK REGAL

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

    1983 BUICK REGAL

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

    1978 PONTIAC FIREBIRD

    • EngineType: V8
    • SubModel: ESPRIT

    1980 CHEVROLET CORVETTE

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

    1981 CHEVROLET IMPALA

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

    1977 PONTIAC LEMANS

    • EngineType: V8
    • SubModel: SPORT COUPE

    1977 BUICK REGAL

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

    1976 CHEVROLET MONTE CARLO

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

    1977 CHEVROLET CAPRICE

    • EngineType: V8
    • SubModel: CLASSIC

    1973 CHEVROLET CORVETTE

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

    1979-1980 BUICK REGAL

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

    1977 CHEVROLET NOVA

    • EngineType: V8
    • SubModel: CONCOURS

    1978 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • EngineType: V8
    • SubModel: VISTA CRUISER

    1976 CHEVROLET NOVA

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

    1978 OLDSMOBILE CUTLASS SUPREME

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

    1978 PONTIAC GRAND LEMANS

    • EngineType: ALL
    • SubModel: SA

    1984 CHEVROLET CAPRICE

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

    1978-1979 PONTIAC PHOENIX

    • EngineType: V8
    • SubModel: BASE

    1978 BUICK CENTURY

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

    1980 CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: 8
    • CUI: 350
    • EngineType: V8

    1980-1981 BUICK CENTURY

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

    1977 OLDSMOBILE OMEGA

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

    1984 OLDSMOBILE CUTLASS CALAIS

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

    1976 PONTIAC LEMANS

    • EngineType: ALL
    • SubModel: SPORT COUPE

    1972 CHEVROLET CHEVELLE

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

    1977 PONTIAC FIREBIRD

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

    1976 CHEVROLET NOVA

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