Description
Connecting Rod - SIR - I Beam - 6.135 in Long - Bushed - 7/16 in Cap Screws - 8740 Bolt - Forged - Steel - Big Block Chevy - Set of 8
Eagle Chevrolet Big Block 5140 I-Beam Connecting Rod 6.135in w/ 7/16in ARP 8740 (Set of 8)
Eagle's commitment to quality and service has resulted in customer loyalty and satisfaction. This, in turn, has fueled rapid growth over the years. Eagle added crankshafts to our lineup a few years later as well as expanding our offerings in Connecting Rods. Continuous design improvements and improvements in materials and manufacturing techniques have resulted in Eagle being the largest and most respected aftermarket connecting rod and crank manufacturer in the industry. We never stop researching ways to make our products lighter, stronger, more efficient to manufacture, and more diverse. When you stop moving forward, you get passed by the competition.
Additional Information
6.135" 5140 STEEL I-BEAM, 7/16" ARP 8740 BOLTS
Application Summary
NA
Part Type
Engine Connecting Rod
| Additional Application Notes | |
|---|---|
| • Big Block | |
These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.
Data: v2 - Desc: v4.2 - Upd: 2026-11-07 20:03:42
Features
Note for Pistons, Rings, Rotors, Rods and engine internals
Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.
(keyword: rod)Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| Bolts: | 3/8" ARP 8740 |
| Description: | SIR I-Beam Connecting Rods; Bushed; Set of 8 |
| Housing Bore: | 2.325 |
| Length Center Bore To Center Bore: | 6.135 |
| Length: | 6.135" |
| Material: | Forged 5140 steel |
| Part Number: | eagSIR6135B |
| Pin Size: | 0.99 |
| Rod Journal: | 2.2 |
| Title: | ESP 5140 STEEL I-BEAM CHEV BB 6.135" BUSHED |
| Weight: | 830g |
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Eagle, Eagle Specialty Products |
| StreetFX SKU | eagSIR6135B |
| SFX Item ID | 4052894 |
| Accounting SKU | eag-SIR6135B |
| Manufacturer SKU | SIR6135B |
| Manufacturer UPC | 793348070407 |
| Alternative References | ESP-6135B |
Connecting Rods, SIR 5140 I-Beam, Bushed, Chevy, Big Block, Set of 8
Why spend time and money reconditioning your stock rods—when you can upgrade to a set of Eagle SIR I-Beam connecting rods for less? They're forged from 5140 steel for outstanding strength and reliability, and they come in both press-fit and bushed pin models. Their lightweight design places less stress on the rest of your rotating assembly to increase engine life and better handle high-rpm use. The rods are X-rayed, sonic-tested, magnafluxed, and shot-peened to stress-relieve the metal. They come with 12-point ARP Wave-Lok rod bolts and are weight-matched to within two grams. The big end sizing is controlled by in-house CNC equipment to ensure precise machining and accurate fitment. Order the individual rod or set recommended for your year/make and engine application.
| Product Attributes | |
|---|---|
| Brand | Eagle Specialty Products |
| Manufacturer's Part Number | SIR6135B |
| Part Type | Connecting Rods |
| Product Line | Eagle SIR I-Beam Connecting Rods |
| UPC | 793348070407 |
| Connecting Rod Length Center to Center (in.) | 6.135 in. |
| Connecting Rod Beam Style | I-beam |
| Connecting Rod Material | Forged 5140 steel |
| Wrist Pin Style | Floating |
| Pin End Bore Diameter | 0.990 in. |
| Rod Journal Diameter (in.) | 2.200 |
| Big End Bore Diameter (in.) | 2.3250 |
| Quantity | Sold as a set of 8. |
| Cap Retention Style | Cap screw |
| Clearanced for Stroker | No |
| Connecting Rod Bolt Brand | ARP |
| Connecting Rod Bolt Diameter | 7/16 in. |
| Connecting Rod Bolt Material | 8740 chromoly steel |
| Fastener Tensile Strength (psi) | 160,000 psi |
| Connecting Rod Bolt Head Style | 12-point |
| Approximate Connecting Rod Weight (g) | 830 |
| Advertised Horsepower Rating | 700 hp |
| Advertised RPM Rating | 7,500 rpm |
| Weight Matched Set | Yes |
| Remanufactured | No |
| Magnafluxed | Yes |
| Connecting Rod Color | Polished and shot-peened |
Compatibility
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