Speedmaster H-beam connecting rods are one of the strongest connecting rods available. Speedmaster H-beam connecting rods are perfect for supercharged and nitrous applications. These rods incorporate a special doweled cap for specific cap-to-rod alignment and are profiled with extra clearance for stroker applications.Item Condition: Brand New
| Brand: | Speedmaster |
| Part Number: | 1-274-018 |
| Part Type: | Connecting Rod |
| Product Line: | H-Beam |
| Connecting Rod Length Center to Center (in): | 5.956 in. |
| Connecting Rod Beam Style: | H-beam |
| Connecting Rod Material: | Forged 4340 steel |
| Connecting Rod Finish: | Shot-peened |
| Wrist Pin Style: | Floating |
| Clearanced for Stroker: | No |
| Cap Retention Style: | Cap screw |
| Connecting Rod Bolt Brand: | ARP |
| Connecting Rod Bolt Diameter: | 7/16 in. |
| Connecting Rod Bolt Material: | 8740 chromoly steel |
| Fastener Yield Strength (psi): | 200,000 psi |
| Connecting Rod Bolt Head Style: | 12-point |
| Approximate Connecting Rod Weight (g): | n/a |
| Rod Journal Diameter (in): | 2.310 in. |
| Big End Bore Diameter (in): | n/a |
| Pin End Bore Diameter (in): | 0.912 in. |
| Big End Width (in): | 0.830 in. |
| Advertised Horsepower Rating (hp): | 750 hp |
| Advertised RPM Rating: | 8,500 rpm |
| Weight Matched Set: | Yes |
| Remanufactured: | No |
| Magnafluxed: | Yes |
| Quantity: | Sold as a set of 8. |
| Tool: | Stroker Combinations |
Speedmaster H-beam connecting rods are manufactured from aircraft quality 4340 chromoly steel. The rods are x-rayed and ultrasonically tested with all surfaces shot peened and stress relieved.
ARP connecting rod bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and threads are rolled to provide up to ten times more fatigue strength. This makes them far superior to standard OEM fasteners in terms of durability, and fully capable of handling the extra stress of high-combustion engines.





In 1979, the company was founded with Pete's Performance, which was a small speed workshop. It began by building engines for customers as a hobby, and it has now grown to include selling, assembling, manufacturing and racing high performance engine parts. Over the years, the company has grown into a worldwide high performance powerhouse. Growing from a one-man bricks-and-mortar business; to now a supply chain in which entails more than 400+ people all across the world. Today, Pete's Performance has evolved into the internationally known Speedmaster: which has distribution centres and offices is Sydney, Los Angeles and Shanghai.
WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to https://www.p65warnings.ca.gov/
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This product application notice is regarding the eBay fitment categories allocated to this listing.
Seeing as we sell aftermarket parts; this listing fitment application categories cover both standard replacement and 'common upgrade' options for specific vehicle applications (eBay fitment categories). Therefore, please read the description carefully and understand your application before purchasing this item; as it may not suit your application.
Please note: high performance parts are not direct replacement parts for OEM parts, and may not fit your application as original OEM parts, and may require slight modifications depending on the intended purpose of some applications.