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Speedmaster 1-274-012 I-Beam Connecting Rods 6.385" BBC 454 Forged 5140 Steel w/ ARP 2000 Bolts

(Chevrolet Corvette 1970-74, Impala 1970-76, Malibu 1975, C1500 1990-93, Chevelle 1970-75, Blazer 1973-74, C10 Pickup 1973-74, Caprice 1970-76 + 100 more models)

Manufacturer

Picture for manufacturer Speedmaster

Part Number

1-274-012
7 reviews
Sale Price

$339.82

In Stock (10+)

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Usually delivered within 2 days

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Product Details

Speedmaster I-Beam connecting rods are engineered to deliver exceptional strength and reliability for high-performance Chevy Big Block 454 applications. Manufactured from high-quality forged 5140 steel, these rods incorporate advanced design features typically found in premium H-beam rods while maintaining the proven I-beam architecture.

Key Specifications:

  • Rod Length (Center-to-Center): 6.385 inches
  • Big End (Journal) Diameter: 2.200 inches
  • Small End (Pin) Diameter: 0.990 inches
  • Material: Forged 5140 steel
  • Fasteners: ARP 2000 connecting rod bolts

Design Features:

  • One-rib cap design provides added strength and superior bearing support
  • Polished beams eliminate stress risers and potential failure points
  • Profiled with clearance for long stroke applications
  • X-rayed and ultrasonically tested for quality assurance
  • All surfaces shot peened and stress relieved for maximum durability

ARP 2000 Fasteners:

  • Precision CNC-machined to exacting specifications
  • Heat-treated with rolled threads for superior fatigue resistance
  • Up to ten times more fatigue strength than OEM fasteners
  • Fully capable of handling high-combustion engine stress

These connecting rods are ideal for street performance and racing applications where durability and reliability are critical. The combination of forged 5140 steel construction and premium ARP 2000 bolts ensures these rods can handle the demands of high-horsepower builds.

Products specifications

Fits

Chevrolet Corvette 1970-74, Impala 1970-76, Malibu 1975, C1500 1990-93, Chevelle 1970-75, Blazer 1973-74, C10 Pickup 1973-74, Caprice 1970-76, C10 1975-80, El Camino 1970-75, Monte Carlo 1970-75, K2500 1991-2000, Nova 1970-71 + 95 more models

Product Weight (lbs.)

17.2

You had what I needed. Filling out the form and paying was quick and easy.

Great company and fast shipping

Fast delivery good items as described

Very easy so far.

So far so good they look like they're originally Equipment

Great

I received the bar and it looks to be very high-quality. However, this bar says it fits a 2003 through 2013 dodge ram 25 and 3500 series trucks. However, from 2003 to 2007-1/2. This truck comes with 1/2' (14mm) bolts. This bar only comes with the 14 mm and the upgraded 5/8' Hardware for the top joint. The lower joint connecting to the Axle only has the 5/8 hole and does not come with a reducing kit nor does it come with an upgraded 5/8' bolt, which would at least allow you to drill out the lower Mounting holes to mount this bar. As a result, you cannot use the original bolt and you have to go to Supply store to find the correct size bolt to allow you to mount this track bar. Highly inconvenient for the customer, especially when there is no mention of this in the description for the part. At the bare minimum, this track bar should've came with the second 5/8' bolt With the kit.

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