SBC B/I Rocker Arm Kit 1.60 Ratio 3/8 Stud

The ELGIN SBC B/I Rocker Arm Kit 1.60 Ratio 3/8 Stud is a direct replacement or performance upgrade set engineered for small-block Chevrolet engines seeking precise valve actuation and durability. Whether you're rebuilding a stock 350, 305, or 327 or enhancing a modified powerplant, this eight-piece rocker arm kit delivers the mechanical advantage and reliability that serious engine builders and weekend warriors depend on. The 1.60 ratio amplifies lift at the valve, promoting better cylinder filling and scavenging—critical for both street performance and competition applications.

Constructed from hardened steel and finished in Black Ice coating for corrosion resistance, each rocker arm in this kit features a 3/8-inch stud mount design compatible with standard small-block Chevy cylinder heads. The ball-and-nut assembly ensures smooth pivot action and repeatable geometry, while the OEM long-slot design accommodates pushrod length variations without binding—a critical detail when running aftermarket pushrods or non-stock camshaft profiles. This 1.60 ratio configuration provides meaningful valve lift multiplication without requiring exotic materials or extreme port modifications, making it an accessible upgrade for naturally aspirated builds.

Builders upgrading from stamped steel arms will immediately notice improved stability under valve spring pressure and reduced deflection during high-RPM operation. This kit is ideal for vintage restorations, street engines targeting 5,500–6,500 RPM capability, and budget-conscious racers seeking a proven foundation without factory limitations. Installation is straightforward using existing stud locations; ensure proper pushrod length measurement before assembly to maximize the long-slot design's centering benefit. All hardware—studs and nuts—ships included, streamlining your build timeline.