H-Tuff H-Beam Connecting Rods Small Block Chevy LS/LT1
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MANLEYPART NUMBER: 660-15053R-8

H-Tuff H-Beam Connecting Rods Small Block Chevy LS/LT1

$1,03105
ShippingShips on 09/29/2026
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GM
H-Tuff H-Beam Connecting Rods
  • Small Block Chevy LS/LT1
  • 6.125 in. Center-to-Center Length
  • 4340 Forged
  • 7/16 (.4375) in. ARP 2000 Bolts
  • 680 Gram Weight
  • Set of 8

    Features:

    • Bridges the gap between Manely's standard H-beam and the top-of-the-line I-beam connecting rods
    • An overall stronger rod and provides a greater safety margin over standard H-beam connecting rods to handle higher boost and horsepower levels
    • Incorporates a wider beam and increased cross-sectional thickness in critical areas
    • Ribbed pin surround
    • Manufactured from 4340 forgings
    • 6.125 in. center-to-center length (.025 in. longer than stock LS/LT1 connecting rods)
    • 2.225 in. big end bore
    • .941 in. big end width
    • 1.060 in. pin end width
    • .9457 in. pin bore
    • 680 average gram weight
    • Weight matched set is ± 1.5 grams
    • Heat-treated, stress relieved, shot peened and 100% magnafluxed
    • Cap fasteners are 7/16 (.4375) in. ARP 2000 bolts
    • *Flywheel horsepower range:
      • 1,000 HP (Oval Track)
      • 1,200+ HP (Drag Race)
        • *Horsepower range could be exceeded depending upon rpm, stroke, piston weight, and power adders

    Note: For Small Block Chevy LS/LT1 engines with pistons ready to accept 6.125 in. length rods. Stock LS / LT1 rods are 6.100 in. long

  • Part TypeConnecting Rod
    BrandMANLEY
    Package Height4.5
    Package Width9.0
    Package Length10.0
    Weight12.0 PG
    Part CategoryPerformance Parts
    Connecting Rod Bolt BrandARP
    Connecting Rod MaterialForged 4340 steel
    Connecting Rod Bolt Head Style12-point
    Connecting Rod Bolt MaterialARP2000 alloy
    Big End Bore Diameter2.225 in (56.515 mm)
    QuantitySet of 8
    Connecting Rod Beam StyleH-beam
    Pin End Width1.06 in (26.9 mm)
    Main Bearings IncludedNo
    Big End Width0.941 in (23.901 mm)
    Rod Bearings IncludedNo
    Connecting Rod Length Center To Center6.125 in (155.575 mm)
    Approximate Connecting Rod Weight (G)680
    MagnafluxedYes
    Weight Matched SetYes
    Cap Retention StyleThrough-bolt
    Pin End Bore Diameter0.946 in (24 mm)
    Part FitmentSemi Universal
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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