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Ultra Pro Magnum XD Rocker Arms Big Block Chevy 396-454
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-1820-16

Ultra Pro Magnum XD Rocker Arms Big Block Chevy 396-454

$65095
2 left in stock
ShippingShips on Sep 14, 2026
Lowest PriceLowest Price Guarantee
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$29296
Stainless Steel Roller Rocker Arms for Big Block Chevy 396-454 V8 [1.7 Ratio, 7/16 in Stud]

555-20910

Stainless Steel Roller Rocker Arms for Big Block Chevy 396-454 V8 [1.7 Ratio, 7/16 in Stud]

$35799

Big Block Chevy 396-454
    Ultra Pro Magnum XD Rocker Arms
  • Big Block Chevy 396-454
  • 1.7 Ratio
  • 7/16" Stud
  • 16/pkg

  • 8650 Steel Construction
  • Outlasts And Outperforms Other Rockers
  • Unique Machined Billet Pushrod Seat
  • FEA And CAD Development
  • Improved Strength And Stiffness
  • Rebuildable Design
  • Engineered For Use In Endurance/Circle/Drag Race
  • Lifetime Warranty

    Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572


    Machined from 8650 steel with a billet pushrod seat insert, these Ultra Pro Magnum XD rockers can handle up to 1,000 lbs of spring pressure. These 1820 rockers feature a 1.7 ratio for use with 7/16" stud Chevrolet 396-454 Big Block.
Part TypeRocker Arm
BrandCOMP CAMS
Package Height3.7
Package Width4.0
Package Length12.8
Weight10.2 PG
Part CategoryPerformance Parts
Arm FinishBlack oxide
Rocker Arm Ratio1.7
Shims IncludedNo
Maximum Spring Diameter1.645 in (41.783 mm)
Stud Size 7/16
Rocker Arm Nut StylePolylock
QuantitySold as a set of 16
Rocker Arm Mounting StyleStud
Engine Make/SizeChevy Big Block (396-454)
Self-AligningNo
Rocker Arm StyleFull roller
Rocker Arm Body StyleStandard
Arm MaterialChromoly steel
Ratio1.7
Slot Width0.562 in (14.3 mm)
Vendor Part Number1820-16
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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