Chevy SBC 350 STD Main Bearings (Large Journal) 262 265 267 302 305 307 327 383 These rockers are precision-machined to

These rockers are precision-machined to ensure consistency and ratio accuracy and have a great looking anodized finish

straight ball-milled

377" (35mm) axle shaft35 spline axles:Requires bearing PCE231

and dependable operation for the life of your vehicle

When roller rocker arms are installed

Chevy SBC 350 STD Main Bearings (Large Journal) 262 265 267 302 305 307 327 383 These rockers are precision-machined toThese Speedmaster main bearings are just what you need to freshen up your engine. Why? They use silicon aluminum bi metal construction. Silicon aluminum is the choice for many of today's engine manufacturers because of its high fatigue strength and superior temperature threshold. Bearing wear is dramatically reduced and the fatigue strength is greatly improved.