Product: Proform 66907 Extruded Aluminum Roller-Rocker Arm, 1.5 Ratio, 3/8" Stud
Brand: ProForm
Designed for select Chevrolet Small Block Engines
1.5 Ratio for 3/8" studs
Full needle bearing fulcrum and roller tip
Reduces internal valve train friction
16 extruded aluminum roller rockers and 16 poly locks.

Search query: roller rockers 455 olds
Relevance: Exact