Description

Ultra ARC Rocker w/ 1.6 Ratio for ’77-’92 Ford 289-351W w/ 5/16″ StudThe Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine powerimprove valvetrain stabilityand enhance oiling efficiency. Their extruded designâ??developed using FEA analysisâ??creates a strongerstiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature an ArcedRecessedContoured design delivers an optimal strength-to-weight ratio. Backed by a Lifetime Warrantyâ??buy them once and use them forever. Engineered for applications running up to 700 lbs of open spring pressure.