Speedmaster I-beam connecting rods incorporate all of the best features possible for an I-beam rod, including some strength adders found in H-beam designs. Speedmaster I-beam connecting rods are profiled with clearance for long stroke applications. These connecting rods feature a one-rib cap design for added strength and bearing support, polished beams to eliminate stress risers

Speedmaster I-beam connecting rods are manufactured from aircraft 4340 chromoly steel and designed to be the most reliable in the racing industry. The rods are x-rayed and ultrasonically tested with all surfaces shot peened and stress relieved. Perfect for engines producing 1000+ HP

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.

Brand: Speedmaster

Part Number: 1-274-027

Part Type: Connecting Rod

Product Line: I-Beam Pro/Race

Connecting Rod Length Center to Center (in): 5.700 in.

Connecting Rod Beam Style: I-beam

Connecting Rod Material: Forged 4340 steel

Connecting Rod Finish: Shot-peened

Wrist Pin Style: Floating

Clearance for Stroker: No

Cap Retention Style: Cap screw

Connecting Rod Bolt Brand: ARP

Connecting Rod Bolt Diameter: 7/16 in.

Connecting Rod Bolt Material: ARP2000 alloy

Fastener Yield Strength (psi): 220,000 psi

Connecting Rod Bolt Head Style: 12-point

Approximate Connecting Rod Weight (g): n/a

Rod Journal Diameter (in): 2.100 in.

Big End Bore Diameter (in): n/a

Pin End Bore Diameter (in): 0.927 in.

Big End Width (in): 0.945 in.

Advertised Horsepower Rating (hp): 1000+ hp

Advertised RPM Rating: 9,500 rpm

Weight Matched Set: Yes

Remanufactured: No

Magnafluxed: Yes

Quantity: Sold as a set of 8.

Tool: Stroker Combinations