Machined from 8650 steel with a billet pushrod seat insert, these Ultra Pro Magnum XD rockers can handle up to 1,000 lbs of spring pressure. This 1801 rocker features a 1.5 ratio for use with 3/8" stud Chevrolet V6 and 265-400 Small Block.
For Small Block Chevrolet applications, 1.5 ratio, 3/8" stud; Machined billet pushrod seat insert; 8650 steel construction outlasts and outperforms other rockers in accuracy and strength; Ultra Pro Magnum XD Rocker Arm bodies are guaranteed against breakage for life;
