Upgrade your Pontiac's valvetrain with the Speedmaster DNA® Aluminum Roller Rocker Arms Set (1-261-015), engineered specifically for Pontiac 326, 400, and 455 engines. Featuring a 1.52 rocker ratio and 7/16" stud size, these roller rockers are designed to reduce friction, improve valve actuation consistency, and help unlock more of your engine's performance potential compared to stock stamped-steel units.
Constructed from aluminum for reduced reciprocating weight, this complete set delivers the durability and precision demanded by street performance and racing applications. The DNA® roller tip design minimizes wear on the valve stem while promoting smoother, more efficient rocker motion — making this set a smart valvetrain upgrade for any Pontiac 326, 400, or 455 build.
